CVE-2024-56765 (GCVE-0-2024-56765)

Vulnerability from cvelistv5 – Published: 2025-01-06 16:20 – Updated: 2026-08-05 11:46
VLAI
Title
powerpc/pseries/vas: Add close() callback in vas_vm_ops struct
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries/vas: Add close() callback in vas_vm_ops struct The mapping VMA address is saved in VAS window struct when the paste address is mapped. This VMA address is used during migration to unmap the paste address if the window is active. The paste address mapping will be removed when the window is closed or with the munmap(). But the VMA address in the VAS window is not updated with munmap() which is causing invalid access during migration. The KASAN report shows: [16386.254991] BUG: KASAN: slab-use-after-free in reconfig_close_windows+0x1a0/0x4e8 [16386.255043] Read of size 8 at addr c00000014a819670 by task drmgr/696928 [16386.255096] CPU: 29 UID: 0 PID: 696928 Comm: drmgr Kdump: loaded Tainted: G B 6.11.0-rc5-nxgzip #2 [16386.255128] Tainted: [B]=BAD_PAGE [16386.255148] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.00 (NH1110_016) hv:phyp pSeries [16386.255181] Call Trace: [16386.255202] [c00000016b297660] [c0000000018ad0ac] dump_stack_lvl+0x84/0xe8 (unreliable) [16386.255246] [c00000016b297690] [c0000000006e8a90] print_report+0x19c/0x764 [16386.255285] [c00000016b297760] [c0000000006e9490] kasan_report+0x128/0x1f8 [16386.255309] [c00000016b297880] [c0000000006eb5c8] __asan_load8+0xac/0xe0 [16386.255326] [c00000016b2978a0] [c00000000013f898] reconfig_close_windows+0x1a0/0x4e8 [16386.255343] [c00000016b297990] [c000000000140e58] vas_migration_handler+0x3a4/0x3fc [16386.255368] [c00000016b297a90] [c000000000128848] pseries_migrate_partition+0x4c/0x4c4 ... [16386.256136] Allocated by task 696554 on cpu 31 at 16377.277618s: [16386.256149] kasan_save_stack+0x34/0x68 [16386.256163] kasan_save_track+0x34/0x80 [16386.256175] kasan_save_alloc_info+0x58/0x74 [16386.256196] __kasan_slab_alloc+0xb8/0xdc [16386.256209] kmem_cache_alloc_noprof+0x200/0x3d0 [16386.256225] vm_area_alloc+0x44/0x150 [16386.256245] mmap_region+0x214/0x10c4 [16386.256265] do_mmap+0x5fc/0x750 [16386.256277] vm_mmap_pgoff+0x14c/0x24c [16386.256292] ksys_mmap_pgoff+0x20c/0x348 [16386.256303] sys_mmap+0xd0/0x160 ... [16386.256350] Freed by task 0 on cpu 31 at 16386.204848s: [16386.256363] kasan_save_stack+0x34/0x68 [16386.256374] kasan_save_track+0x34/0x80 [16386.256384] kasan_save_free_info+0x64/0x10c [16386.256396] __kasan_slab_free+0x120/0x204 [16386.256415] kmem_cache_free+0x128/0x450 [16386.256428] vm_area_free_rcu_cb+0xa8/0xd8 [16386.256441] rcu_do_batch+0x2c8/0xcf0 [16386.256458] rcu_core+0x378/0x3c4 [16386.256473] handle_softirqs+0x20c/0x60c [16386.256495] do_softirq_own_stack+0x6c/0x88 [16386.256509] do_softirq_own_stack+0x58/0x88 [16386.256521] __irq_exit_rcu+0x1a4/0x20c [16386.256533] irq_exit+0x20/0x38 [16386.256544] interrupt_async_exit_prepare.constprop.0+0x18/0x2c ... [16386.256717] Last potentially related work creation: [16386.256729] kasan_save_stack+0x34/0x68 [16386.256741] __kasan_record_aux_stack+0xcc/0x12c [16386.256753] __call_rcu_common.constprop.0+0x94/0xd04 [16386.256766] vm_area_free+0x28/0x3c [16386.256778] remove_vma+0xf4/0x114 [16386.256797] do_vmi_align_munmap.constprop.0+0x684/0x870 [16386.256811] __vm_munmap+0xe0/0x1f8 [16386.256821] sys_munmap+0x54/0x6c [16386.256830] system_call_exception+0x1a0/0x4a0 [16386.256841] system_call_vectored_common+0x15c/0x2ec [16386.256868] The buggy address belongs to the object at c00000014a819670 which belongs to the cache vm_area_struct of size 168 [16386.256887] The buggy address is located 0 bytes inside of freed 168-byte region [c00000014a819670, c00000014a819718) [16386.256915] The buggy address belongs to the physical page: [16386.256928] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a81 [16386.256950] memcg:c0000000ba430001 [16386.256961] anon flags: 0x43ffff800000000(node=4|zone=0|lastcpupid=0x7ffff) [16386.256975] page_type: 0xfdffffff(slab) [16386 ---truncated---
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 37e6764895ef7431f45ff603a548549d409993d2 , < 8b2282b5084521254a2cd9742a3f4e1d5b77f843 (git)
Affected: 37e6764895ef7431f45ff603a548549d409993d2 , < b7f60ffdfd96f8fc826f1d61a1c6067d828e20b9 (git)
Affected: 37e6764895ef7431f45ff603a548549d409993d2 , < 6d9cd27105459f169993a4c5f216499a946dbf34 (git)
Affected: 37e6764895ef7431f45ff603a548549d409993d2 , < 05aa156e156ef3168e7ab8a68721945196495c17 (git)
Create a notification for this product.
Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.1.123 , ≤ 6.1.* (semver)
Unaffected: 6.6.69 , ≤ 6.6.* (semver)
Unaffected: 6.12.8 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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{
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            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
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              "content": {
                "id": "CVE-2024-56765",
                "options": [
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                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-13T13:56:48.712913Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
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            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
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        "providerMetadata": {
          "dateUpdated": "2025-02-13T14:04:27.747Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "references": [
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            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
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        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/platforms/book3s/vas-api.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.1.123",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.69",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.123",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.6.69",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.12.8",
                  "versionStartIncluding": "5.18",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/pseries/vas: Add close() callback in vas_vm_ops struct\n\nThe mapping VMA address is saved in VAS window struct when the\npaste address is mapped. This VMA address is used during migration\nto unmap the paste address if the window is active. The paste\naddress mapping will be removed when the window is closed or with\nthe munmap(). But the VMA address in the VAS window is not updated\nwith munmap() which is causing invalid access during migration.\n\nThe KASAN report shows:\n[16386.254991] BUG: KASAN: slab-use-after-free in reconfig_close_windows+0x1a0/0x4e8\n[16386.255043] Read of size 8 at addr c00000014a819670 by task drmgr/696928\n\n[16386.255096] CPU: 29 UID: 0 PID: 696928 Comm: drmgr Kdump: loaded Tainted: G    B              6.11.0-rc5-nxgzip #2\n[16386.255128] Tainted: [B]=BAD_PAGE\n[16386.255148] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.00 (NH1110_016) hv:phyp pSeries\n[16386.255181] Call Trace:\n[16386.255202] [c00000016b297660] [c0000000018ad0ac] dump_stack_lvl+0x84/0xe8 (unreliable)\n[16386.255246] [c00000016b297690] [c0000000006e8a90] print_report+0x19c/0x764\n[16386.255285] [c00000016b297760] [c0000000006e9490] kasan_report+0x128/0x1f8\n[16386.255309] [c00000016b297880] [c0000000006eb5c8] __asan_load8+0xac/0xe0\n[16386.255326] [c00000016b2978a0] [c00000000013f898] reconfig_close_windows+0x1a0/0x4e8\n[16386.255343] [c00000016b297990] [c000000000140e58] vas_migration_handler+0x3a4/0x3fc\n[16386.255368] [c00000016b297a90] [c000000000128848] pseries_migrate_partition+0x4c/0x4c4\n...\n\n[16386.256136] Allocated by task 696554 on cpu 31 at 16377.277618s:\n[16386.256149]  kasan_save_stack+0x34/0x68\n[16386.256163]  kasan_save_track+0x34/0x80\n[16386.256175]  kasan_save_alloc_info+0x58/0x74\n[16386.256196]  __kasan_slab_alloc+0xb8/0xdc\n[16386.256209]  kmem_cache_alloc_noprof+0x200/0x3d0\n[16386.256225]  vm_area_alloc+0x44/0x150\n[16386.256245]  mmap_region+0x214/0x10c4\n[16386.256265]  do_mmap+0x5fc/0x750\n[16386.256277]  vm_mmap_pgoff+0x14c/0x24c\n[16386.256292]  ksys_mmap_pgoff+0x20c/0x348\n[16386.256303]  sys_mmap+0xd0/0x160\n...\n\n[16386.256350] Freed by task 0 on cpu 31 at 16386.204848s:\n[16386.256363]  kasan_save_stack+0x34/0x68\n[16386.256374]  kasan_save_track+0x34/0x80\n[16386.256384]  kasan_save_free_info+0x64/0x10c\n[16386.256396]  __kasan_slab_free+0x120/0x204\n[16386.256415]  kmem_cache_free+0x128/0x450\n[16386.256428]  vm_area_free_rcu_cb+0xa8/0xd8\n[16386.256441]  rcu_do_batch+0x2c8/0xcf0\n[16386.256458]  rcu_core+0x378/0x3c4\n[16386.256473]  handle_softirqs+0x20c/0x60c\n[16386.256495]  do_softirq_own_stack+0x6c/0x88\n[16386.256509]  do_softirq_own_stack+0x58/0x88\n[16386.256521]  __irq_exit_rcu+0x1a4/0x20c\n[16386.256533]  irq_exit+0x20/0x38\n[16386.256544]  interrupt_async_exit_prepare.constprop.0+0x18/0x2c\n...\n\n[16386.256717] Last potentially related work creation:\n[16386.256729]  kasan_save_stack+0x34/0x68\n[16386.256741]  __kasan_record_aux_stack+0xcc/0x12c\n[16386.256753]  __call_rcu_common.constprop.0+0x94/0xd04\n[16386.256766]  vm_area_free+0x28/0x3c\n[16386.256778]  remove_vma+0xf4/0x114\n[16386.256797]  do_vmi_align_munmap.constprop.0+0x684/0x870\n[16386.256811]  __vm_munmap+0xe0/0x1f8\n[16386.256821]  sys_munmap+0x54/0x6c\n[16386.256830]  system_call_exception+0x1a0/0x4a0\n[16386.256841]  system_call_vectored_common+0x15c/0x2ec\n\n[16386.256868] The buggy address belongs to the object at c00000014a819670\n                which belongs to the cache vm_area_struct of size 168\n[16386.256887] The buggy address is located 0 bytes inside of\n                freed 168-byte region [c00000014a819670, c00000014a819718)\n\n[16386.256915] The buggy address belongs to the physical page:\n[16386.256928] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a81\n[16386.256950] memcg:c0000000ba430001\n[16386.256961] anon flags: 0x43ffff800000000(node=4|zone=0|lastcpupid=0x7ffff)\n[16386.256975] page_type: 0xfdffffff(slab)\n[16386\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable state is created entirely through local syscalls on the `/dev/crypto/nx-gzip` character device (open, `VAS_TX_WIN_OPEN` ioctl, mmap, munmap). No network or remote peer data is involved.\nAC:L - The attacker deterministically plants the dangling `task_ref.vma` pointer with a plain mmap/munmap sequence \u2014 there is no race to win and the poisoned state persists indefinitely, so the attacker can groom `vm_area_cachep` (which is `SLAB_ACCOUNT` without `SLAB_NO_MERGE`) at leisure and across many fds. The consuming event, LPAR migration or CPU DLPAR, is a routine, expected operation on the affected PowerVM platform \u2014 indeed the vulnerable code exists solely to support it.\nPR:L - Only an unprivileged local user account is needed; `Documentation/arch/powerpc/vas-api.rst` states outright that \"No special privileges are needed to open the device,\" and distributions ship the nx-gzip node world-accessible because libnxz/zlib-NX is a userspace compression library. No capability check exists in `coproc_open()`, `coproc_ioc_tx_win_open()`, or `coproc_mmap()`.\nUI:N - No victim is lured into any action; the triggering Live Partition Mobility event is initiated externally by the hypervisor/HMC as routine platform maintenance, entirely outside any OS user\u0027s interaction with the attacker.\nS:U - The use-after-free is consumed inside the kernel and its impact stays within the kernel\u0027s own security authority; no hypervisor, IOMMU, or VM boundary is crossed.\nC:H - KASAN confirms an 8-byte slab-use-after-free read of a freed `vm_area_struct`, and reuse of that 168-byte mergeable-cache object lets the attacker place controlled data there and have the kernel dereference it, yielding kernel memory disclosure primitives well beyond a bounded leak.\nI:H - The freed object is not merely read \u2014 it is passed to `zap_page_range_single()`, so attacker-groomed `vm_mm`/`vm_start`/`vm_end` fields drive page-table teardown against an arbitrary address space while only the unrelated window owner\u0027s `mmap_lock` is held, giving a powerful controlled-pointer write/corruption primitive suitable for privilege escalation.\nA:H - The bug is a confirmed slab-use-after-free that produces a KASAN BUG/oops during partition migration, and unmapping another mm\u0027s pages without its `mmap_lock` readily leads to page-table corruption and kernel panic, taking down the entire LPAR at the worst possible moment."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:46:25.642Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8b2282b5084521254a2cd9742a3f4e1d5b77f843"
        },
        {
          "url": "https://git.kernel.org/stable/c/b7f60ffdfd96f8fc826f1d61a1c6067d828e20b9"
        },
        {
          "url": "https://git.kernel.org/stable/c/6d9cd27105459f169993a4c5f216499a946dbf34"
        },
        {
          "url": "https://git.kernel.org/stable/c/05aa156e156ef3168e7ab8a68721945196495c17"
        }
      ],
      "title": "powerpc/pseries/vas: Add close() callback in vas_vm_ops struct",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56765",
    "datePublished": "2025-01-06T16:20:43.966Z",
    "dateReserved": "2024-12-29T11:26:39.762Z",
    "dateUpdated": "2026-08-05T11:46:25.642Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-56765",
      "date": "2026-08-07",
      "epss": "0.00208",
      "percentile": "0.11025"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.18\", \"versionEndExcluding\": \"6.1.123\", \"matchCriteriaId\": \"53AEFFB4-528C-4AC7-931F-A721081D27AB\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.69\", \"matchCriteriaId\": \"EF18E3CB-058C-4836-B36D-8073F1C09977\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.12.8\", \"matchCriteriaId\": \"E79883DD-75BE-4DA9-B4EC-AC6DE63BD438\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"DE491969-75AE-4A6B-9A58-8FC5AF98798F\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"93C0660D-7FB8-4FBA-892A-B064BA71E49E\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/pseries/vas: Add close() callback in vas_vm_ops struct\\n\\nThe mapping VMA address is saved in VAS window struct when the\\npaste address is mapped. This VMA address is used during migration\\nto unmap the paste address if the window is active. The paste\\naddress mapping will be removed when the window is closed or with\\nthe munmap(). But the VMA address in the VAS window is not updated\\nwith munmap() which is causing invalid access during migration.\\n\\nThe KASAN report shows:\\n[16386.254991] BUG: KASAN: slab-use-after-free in reconfig_close_windows+0x1a0/0x4e8\\n[16386.255043] Read of size 8 at addr c00000014a819670 by task drmgr/696928\\n\\n[16386.255096] CPU: 29 UID: 0 PID: 696928 Comm: drmgr Kdump: loaded Tainted: G    B              6.11.0-rc5-nxgzip #2\\n[16386.255128] Tainted: [B]=BAD_PAGE\\n[16386.255148] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.00 (NH1110_016) hv:phyp pSeries\\n[16386.255181] Call Trace:\\n[16386.255202] [c00000016b297660] [c0000000018ad0ac] dump_stack_lvl+0x84/0xe8 (unreliable)\\n[16386.255246] [c00000016b297690] [c0000000006e8a90] print_report+0x19c/0x764\\n[16386.255285] [c00000016b297760] [c0000000006e9490] kasan_report+0x128/0x1f8\\n[16386.255309] [c00000016b297880] [c0000000006eb5c8] __asan_load8+0xac/0xe0\\n[16386.255326] [c00000016b2978a0] [c00000000013f898] reconfig_close_windows+0x1a0/0x4e8\\n[16386.255343] [c00000016b297990] [c000000000140e58] vas_migration_handler+0x3a4/0x3fc\\n[16386.255368] [c00000016b297a90] [c000000000128848] pseries_migrate_partition+0x4c/0x4c4\\n...\\n\\n[16386.256136] Allocated by task 696554 on cpu 31 at 16377.277618s:\\n[16386.256149]  kasan_save_stack+0x34/0x68\\n[16386.256163]  kasan_save_track+0x34/0x80\\n[16386.256175]  kasan_save_alloc_info+0x58/0x74\\n[16386.256196]  __kasan_slab_alloc+0xb8/0xdc\\n[16386.256209]  kmem_cache_alloc_noprof+0x200/0x3d0\\n[16386.256225]  vm_area_alloc+0x44/0x150\\n[16386.256245]  mmap_region+0x214/0x10c4\\n[16386.256265]  do_mmap+0x5fc/0x750\\n[16386.256277]  vm_mmap_pgoff+0x14c/0x24c\\n[16386.256292]  ksys_mmap_pgoff+0x20c/0x348\\n[16386.256303]  sys_mmap+0xd0/0x160\\n...\\n\\n[16386.256350] Freed by task 0 on cpu 31 at 16386.204848s:\\n[16386.256363]  kasan_save_stack+0x34/0x68\\n[16386.256374]  kasan_save_track+0x34/0x80\\n[16386.256384]  kasan_save_free_info+0x64/0x10c\\n[16386.256396]  __kasan_slab_free+0x120/0x204\\n[16386.256415]  kmem_cache_free+0x128/0x450\\n[16386.256428]  vm_area_free_rcu_cb+0xa8/0xd8\\n[16386.256441]  rcu_do_batch+0x2c8/0xcf0\\n[16386.256458]  rcu_core+0x378/0x3c4\\n[16386.256473]  handle_softirqs+0x20c/0x60c\\n[16386.256495]  do_softirq_own_stack+0x6c/0x88\\n[16386.256509]  do_softirq_own_stack+0x58/0x88\\n[16386.256521]  __irq_exit_rcu+0x1a4/0x20c\\n[16386.256533]  irq_exit+0x20/0x38\\n[16386.256544]  interrupt_async_exit_prepare.constprop.0+0x18/0x2c\\n...\\n\\n[16386.256717] Last potentially related work creation:\\n[16386.256729]  kasan_save_stack+0x34/0x68\\n[16386.256741]  __kasan_record_aux_stack+0xcc/0x12c\\n[16386.256753]  __call_rcu_common.constprop.0+0x94/0xd04\\n[16386.256766]  vm_area_free+0x28/0x3c\\n[16386.256778]  remove_vma+0xf4/0x114\\n[16386.256797]  do_vmi_align_munmap.constprop.0+0x684/0x870\\n[16386.256811]  __vm_munmap+0xe0/0x1f8\\n[16386.256821]  sys_munmap+0x54/0x6c\\n[16386.256830]  system_call_exception+0x1a0/0x4a0\\n[16386.256841]  system_call_vectored_common+0x15c/0x2ec\\n\\n[16386.256868] The buggy address belongs to the object at c00000014a819670\\n                which belongs to the cache vm_area_struct of size 168\\n[16386.256887] The buggy address is located 0 bytes inside of\\n                freed 168-byte region [c00000014a819670, c00000014a819718)\\n\\n[16386.256915] The buggy address belongs to the physical page:\\n[16386.256928] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a81\\n[16386.256950] memcg:c0000000ba430001\\n[16386.256961] anon flags: 0x43ffff800000000(node=4|zone=0|lastcpupid=0x7ffff)\\n[16386.256975] page_type: 0xfdffffff(slab)\\n[16386\\n---truncated---\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/pseries/vas: Agregar devoluci\\u00f3n de llamada close() en la estructura vas_vm_ops La direcci\\u00f3n VMA de asignaci\\u00f3n se guarda en la estructura de la ventana VAS cuando se asigna la direcci\\u00f3n de pegado. Esta direcci\\u00f3n VMA se utiliza durante la migraci\\u00f3n para anular la asignaci\\u00f3n de la direcci\\u00f3n de pegado si la ventana est\\u00e1 activa. La asignaci\\u00f3n de la direcci\\u00f3n de pegado se eliminar\\u00e1 cuando se cierre la ventana o con munmap(). Pero la direcci\\u00f3n VMA en la ventana VAS no se actualiza con munmap(), lo que provoca un acceso no v\\u00e1lido durante la migraci\\u00f3n. El informe de KASAN muestra: [16386.254991] BUG: KASAN: slab-use-after-free in reconfig_close_windows+0x1a0/0x4e8 [16386.255043] Read of size 8 at addr c00000014a819670 by task drmgr/696928 [16386.255096] CPU: 29 UID: 0 PID: 696928 Comm: drmgr Kdump: loaded Tainted: G B 6.11.0-rc5-nxgzip #2 [16386.255128] Tainted: [B]=BAD_PAGE [16386.255148] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.00 (NH1110_016) hv:phyp pSeries [16386.255181] Call Trace: [16386.255202] [c00000016b297660] [c0000000018ad0ac] dump_stack_lvl+0x84/0xe8 (unreliable) [16386.255246] [c00000016b297690] [c0000000006e8a90] print_report+0x19c/0x764 [16386.255285] [c00000016b297760] [c0000000006e9490] kasan_report+0x128/0x1f8 [16386.255309] [c00000016b297880] [c0000000006eb5c8] __asan_load8+0xac/0xe0 [16386.255326] [c00000016b2978a0] [c00000000013f898] reconfig_close_windows+0x1a0/0x4e8 [16386.255343] [c00000016b297990] [c000000000140e58] vas_migration_handler+0x3a4/0x3fc [16386.255368] [c00000016b297a90] [c000000000128848] pseries_migrate_partition+0x4c/0x4c4 ... [16386.256136] Allocated by task 696554 on cpu 31 at 16377.277618s: [16386.256149] kasan_save_stack+0x34/0x68 [16386.256163] kasan_save_track+0x34/0x80 [16386.256175] kasan_save_alloc_info+0x58/0x74 [16386.256196] __kasan_slab_alloc+0xb8/0xdc [16386.256209] kmem_cache_alloc_noprof+0x200/0x3d0 [16386.256225] vm_area_alloc+0x44/0x150 [16386.256245] mmap_region+0x214/0x10c4 [16386.256265] do_mmap+0x5fc/0x750 [16386.256277] vm_mmap_pgoff+0x14c/0x24c [16386.256292] ksys_mmap_pgoff+0x20c/0x348 [16386.256303] sys_mmap+0xd0/0x160 ... [16386.256350] Freed by task 0 on cpu 31 at 16386.204848s: [16386.256363] kasan_save_stack+0x34/0x68 [16386.256374] kasan_save_track+0x34/0x80 [16386.256384] kasan_save_free_info+0x64/0x10c [16386.256396] __kasan_slab_free+0x120/0x204 [16386.256415] kmem_cache_free+0x128/0x450 [16386.256428] vm_area_free_rcu_cb+0xa8/0xd8 [16386.256441] rcu_do_batch+0x2c8/0xcf0 [16386.256458] rcu_core+0x378/0x3c4 [16386.256473] handle_softirqs+0x20c/0x60c [16386.256495] do_softirq_own_stack+0x6c/0x88 [16386.256509] do_softirq_own_stack+0x58/0x88 [16386.256521] __irq_exit_rcu+0x1a4/0x20c [16386.256533] irq_exit+0x20/0x38 [16386.256544] interrupt_async_exit_prepare.constprop.0+0x18/0x2c ... [16386.256717] Last potentially related work creation: [16386.256729] kasan_save_stack+0x34/0x68 [16386.256741] __kasan_record_aux_stack+0xcc/0x12c [16386.256753] __call_rcu_common.constprop.0+0x94/0xd04 [16386.256766] vm_area_free+0x28/0x3c [16386.256778] remove_vma+0xf4/0x114 [16386.256797] do_vmi_align_munmap.constprop.0+0x684/0x870 [16386.256811] __vm_munmap+0xe0/0x1f8 [16386.256821] sys_munmap+0x54/0x6c [16386.256830] system_call_exception+0x1a0/0x4a0 [16386.256841] system_call_vectored_common+0x15c/0x2ec [16386.256868] The buggy address belongs to the object at c00000014a819670 which belongs to the cache vm_area_struct of size 168 [16386.256887] The buggy address is located 0 bytes inside of freed 168-byte region [c00000014a819670, c00000014a819718) [16386.256915] The buggy address belongs to the physical page: [16386.256928] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a81 [16386.256950] memcg:c0000000ba430001 [16386.256961] anon flags: 0x43ffff800000000(node=4|zone=0|lastcpupid=0x7ffff) [16386.256975] page_type: 0xfdffffff(slab) [16386 ---truncado---\"}]",
      "id": "CVE-2024-56765",
      "lastModified": "2025-01-07T23:00:53.973",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2025-01-06T17:15:42.800",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/05aa156e156ef3168e7ab8a68721945196495c17\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6d9cd27105459f169993a4c5f216499a946dbf34\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8b2282b5084521254a2cd9742a3f4e1d5b77f843\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/b7f60ffdfd96f8fc826f1d61a1c6067d828e20b9\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T01:14:00.000Z",
      "cve": "CVE-2024-56765",
      "id": "msrc_CVE-2024-56765",
      "initial_release_date": "2025-01-02T00:00:00.000Z",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "powerpc/pseries/vas: Add close() callback in vas_vm_ops struct",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2024-56765.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56765\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-01-06T17:15:42.800\",\"lastModified\":\"2026-06-17T08:12:56.283\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/pseries/vas: Add close() callback in vas_vm_ops struct\\n\\nThe mapping VMA address is saved in VAS window struct when the\\npaste address is mapped. This VMA address is used during migration\\nto unmap the paste address if the window is active. The paste\\naddress mapping will be removed when the window is closed or with\\nthe munmap(). But the VMA address in the VAS window is not updated\\nwith munmap() which is causing invalid access during migration.\\n\\nThe KASAN report shows:\\n[16386.254991] BUG: KASAN: slab-use-after-free in reconfig_close_windows+0x1a0/0x4e8\\n[16386.255043] Read of size 8 at addr c00000014a819670 by task drmgr/696928\\n\\n[16386.255096] CPU: 29 UID: 0 PID: 696928 Comm: drmgr Kdump: loaded Tainted: G    B              6.11.0-rc5-nxgzip #2\\n[16386.255128] Tainted: [B]=BAD_PAGE\\n[16386.255148] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.00 (NH1110_016) hv:phyp pSeries\\n[16386.255181] Call Trace:\\n[16386.255202] [c00000016b297660] [c0000000018ad0ac] dump_stack_lvl+0x84/0xe8 (unreliable)\\n[16386.255246] [c00000016b297690] [c0000000006e8a90] print_report+0x19c/0x764\\n[16386.255285] [c00000016b297760] [c0000000006e9490] kasan_report+0x128/0x1f8\\n[16386.255309] [c00000016b297880] [c0000000006eb5c8] __asan_load8+0xac/0xe0\\n[16386.255326] [c00000016b2978a0] [c00000000013f898] reconfig_close_windows+0x1a0/0x4e8\\n[16386.255343] [c00000016b297990] [c000000000140e58] vas_migration_handler+0x3a4/0x3fc\\n[16386.255368] [c00000016b297a90] [c000000000128848] pseries_migrate_partition+0x4c/0x4c4\\n...\\n\\n[16386.256136] Allocated by task 696554 on cpu 31 at 16377.277618s:\\n[16386.256149]  kasan_save_stack+0x34/0x68\\n[16386.256163]  kasan_save_track+0x34/0x80\\n[16386.256175]  kasan_save_alloc_info+0x58/0x74\\n[16386.256196]  __kasan_slab_alloc+0xb8/0xdc\\n[16386.256209]  kmem_cache_alloc_noprof+0x200/0x3d0\\n[16386.256225]  vm_area_alloc+0x44/0x150\\n[16386.256245]  mmap_region+0x214/0x10c4\\n[16386.256265]  do_mmap+0x5fc/0x750\\n[16386.256277]  vm_mmap_pgoff+0x14c/0x24c\\n[16386.256292]  ksys_mmap_pgoff+0x20c/0x348\\n[16386.256303]  sys_mmap+0xd0/0x160\\n...\\n\\n[16386.256350] Freed by task 0 on cpu 31 at 16386.204848s:\\n[16386.256363]  kasan_save_stack+0x34/0x68\\n[16386.256374]  kasan_save_track+0x34/0x80\\n[16386.256384]  kasan_save_free_info+0x64/0x10c\\n[16386.256396]  __kasan_slab_free+0x120/0x204\\n[16386.256415]  kmem_cache_free+0x128/0x450\\n[16386.256428]  vm_area_free_rcu_cb+0xa8/0xd8\\n[16386.256441]  rcu_do_batch+0x2c8/0xcf0\\n[16386.256458]  rcu_core+0x378/0x3c4\\n[16386.256473]  handle_softirqs+0x20c/0x60c\\n[16386.256495]  do_softirq_own_stack+0x6c/0x88\\n[16386.256509]  do_softirq_own_stack+0x58/0x88\\n[16386.256521]  __irq_exit_rcu+0x1a4/0x20c\\n[16386.256533]  irq_exit+0x20/0x38\\n[16386.256544]  interrupt_async_exit_prepare.constprop.0+0x18/0x2c\\n...\\n\\n[16386.256717] Last potentially related work creation:\\n[16386.256729]  kasan_save_stack+0x34/0x68\\n[16386.256741]  __kasan_record_aux_stack+0xcc/0x12c\\n[16386.256753]  __call_rcu_common.constprop.0+0x94/0xd04\\n[16386.256766]  vm_area_free+0x28/0x3c\\n[16386.256778]  remove_vma+0xf4/0x114\\n[16386.256797]  do_vmi_align_munmap.constprop.0+0x684/0x870\\n[16386.256811]  __vm_munmap+0xe0/0x1f8\\n[16386.256821]  sys_munmap+0x54/0x6c\\n[16386.256830]  system_call_exception+0x1a0/0x4a0\\n[16386.256841]  system_call_vectored_common+0x15c/0x2ec\\n\\n[16386.256868] The buggy address belongs to the object at c00000014a819670\\n                which belongs to the cache vm_area_struct of size 168\\n[16386.256887] The buggy address is located 0 bytes inside of\\n                freed 168-byte region [c00000014a819670, c00000014a819718)\\n\\n[16386.256915] The buggy address belongs to the physical page:\\n[16386.256928] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a81\\n[16386.256950] memcg:c0000000ba430001\\n[16386.256961] anon flags: 0x43ffff800000000(node=4|zone=0|lastcpupid=0x7ffff)\\n[16386.256975] page_type: 0xfdffffff(slab)\\n[16386\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/pseries/vas: Agregar devoluci\u00f3n de llamada close() en la estructura vas_vm_ops La direcci\u00f3n VMA de asignaci\u00f3n se guarda en la estructura de la ventana VAS cuando se asigna la direcci\u00f3n de pegado. Esta direcci\u00f3n VMA se utiliza durante la migraci\u00f3n para anular la asignaci\u00f3n de la direcci\u00f3n de pegado si la ventana est\u00e1 activa. La asignaci\u00f3n de la direcci\u00f3n de pegado se eliminar\u00e1 cuando se cierre la ventana o con munmap(). Pero la direcci\u00f3n VMA en la ventana VAS no se actualiza con munmap(), lo que provoca un acceso no v\u00e1lido durante la migraci\u00f3n. El informe de KASAN muestra: [16386.254991] BUG: KASAN: slab-use-after-free in reconfig_close_windows+0x1a0/0x4e8 [16386.255043] Read of size 8 at addr c00000014a819670 by task drmgr/696928 [16386.255096] CPU: 29 UID: 0 PID: 696928 Comm: drmgr Kdump: loaded Tainted: G B 6.11.0-rc5-nxgzip #2 [16386.255128] Tainted: [B]=BAD_PAGE [16386.255148] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.00 (NH1110_016) hv:phyp pSeries [16386.255181] Call Trace: [16386.255202] [c00000016b297660] [c0000000018ad0ac] dump_stack_lvl+0x84/0xe8 (unreliable) [16386.255246] [c00000016b297690] [c0000000006e8a90] print_report+0x19c/0x764 [16386.255285] [c00000016b297760] [c0000000006e9490] kasan_report+0x128/0x1f8 [16386.255309] [c00000016b297880] [c0000000006eb5c8] __asan_load8+0xac/0xe0 [16386.255326] [c00000016b2978a0] [c00000000013f898] reconfig_close_windows+0x1a0/0x4e8 [16386.255343] [c00000016b297990] [c000000000140e58] vas_migration_handler+0x3a4/0x3fc [16386.255368] [c00000016b297a90] [c000000000128848] pseries_migrate_partition+0x4c/0x4c4 ... [16386.256136] Allocated by task 696554 on cpu 31 at 16377.277618s: [16386.256149] kasan_save_stack+0x34/0x68 [16386.256163] kasan_save_track+0x34/0x80 [16386.256175] kasan_save_alloc_info+0x58/0x74 [16386.256196] __kasan_slab_alloc+0xb8/0xdc [16386.256209] kmem_cache_alloc_noprof+0x200/0x3d0 [16386.256225] vm_area_alloc+0x44/0x150 [16386.256245] mmap_region+0x214/0x10c4 [16386.256265] do_mmap+0x5fc/0x750 [16386.256277] vm_mmap_pgoff+0x14c/0x24c [16386.256292] ksys_mmap_pgoff+0x20c/0x348 [16386.256303] sys_mmap+0xd0/0x160 ... [16386.256350] Freed by task 0 on cpu 31 at 16386.204848s: [16386.256363] kasan_save_stack+0x34/0x68 [16386.256374] kasan_save_track+0x34/0x80 [16386.256384] kasan_save_free_info+0x64/0x10c [16386.256396] __kasan_slab_free+0x120/0x204 [16386.256415] kmem_cache_free+0x128/0x450 [16386.256428] vm_area_free_rcu_cb+0xa8/0xd8 [16386.256441] rcu_do_batch+0x2c8/0xcf0 [16386.256458] rcu_core+0x378/0x3c4 [16386.256473] handle_softirqs+0x20c/0x60c [16386.256495] do_softirq_own_stack+0x6c/0x88 [16386.256509] do_softirq_own_stack+0x58/0x88 [16386.256521] __irq_exit_rcu+0x1a4/0x20c [16386.256533] irq_exit+0x20/0x38 [16386.256544] interrupt_async_exit_prepare.constprop.0+0x18/0x2c ... [16386.256717] Last potentially related work creation: [16386.256729] kasan_save_stack+0x34/0x68 [16386.256741] __kasan_record_aux_stack+0xcc/0x12c [16386.256753] __call_rcu_common.constprop.0+0x94/0xd04 [16386.256766] vm_area_free+0x28/0x3c [16386.256778] remove_vma+0xf4/0x114 [16386.256797] do_vmi_align_munmap.constprop.0+0x684/0x870 [16386.256811] __vm_munmap+0xe0/0x1f8 [16386.256821] sys_munmap+0x54/0x6c [16386.256830] system_call_exception+0x1a0/0x4a0 [16386.256841] system_call_vectored_common+0x15c/0x2ec [16386.256868] The buggy address belongs to the object at c00000014a819670 which belongs to the cache vm_area_struct of size 168 [16386.256887] The buggy address is located 0 bytes inside of freed 168-byte region [c00000014a819670, c00000014a819718) [16386.256915] The buggy address belongs to the physical page: [16386.256928] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a81 [16386.256950] memcg:c0000000ba430001 [16386.256961] anon flags: 0x43ffff800000000(node=4|zone=0|lastcpupid=0x7ffff) [16386.256975] page_type: 0xfdffffff(slab) [16386 ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"arch/powerpc/platforms/book3s/vas-api.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"37e6764895ef7431f45ff603a548549d409993d2\",\"lessThan\":\"8b2282b5084521254a2cd9742a3f4e1d5b77f843\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"37e6764895ef7431f45ff603a548549d409993d2\",\"lessThan\":\"b7f60ffdfd96f8fc826f1d61a1c6067d828e20b9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"37e6764895ef7431f45ff603a548549d409993d2\",\"lessThan\":\"6d9cd27105459f169993a4c5f216499a946dbf34\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"37e6764895ef7431f45ff603a548549d409993d2\",\"lessThan\":\"05aa156e156ef3168e7ab8a68721945196495c17\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"arch/powerpc/platforms/book3s/vas-api.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.123\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.69\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.8\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-02-13T13:56:48.712913Z\",\"id\":\"CVE-2024-56765\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"6.1.123\",\"matchCriteriaId\":\"53AEFFB4-528C-4AC7-931F-A721081D27AB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.69\",\"matchCriteriaId\":\"EF18E3CB-058C-4836-B36D-8073F1C09977\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.8\",\"matchCriteriaId\":\"E79883DD-75BE-4DA9-B4EC-AC6DE63BD438\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE491969-75AE-4A6B-9A58-8FC5AF98798F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"93C0660D-7FB8-4FBA-892A-B064BA71E49E\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/05aa156e156ef3168e7ab8a68721945196495c17\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6d9cd27105459f169993a4c5f216499a946dbf34\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8b2282b5084521254a2cd9742a3f4e1d5b77f843\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b7f60ffdfd96f8fc826f1d61a1c6067d828e20b9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T11:25:06+00:00",
      "cve": "CVE-2024-56765",
      "id": "CVE-2024-56765",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_affected": "156",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: powerpc/pseries/vas: Add close() callback in vas_vm_ops struct",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56765.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-25T01:15:35Z",
      "cve": "CVE-2024-56765",
      "id": "CVE-2024-56765",
      "initial_release_date": "2025-01-07T03:48:52Z",
      "product_status:known_affected": "417",
      "product_status:known_not_affected": "249",
      "product_status:recommended": "464",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-56765",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-56765.json",
      "version": "67"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T20:53:56.780Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-56765\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-13T13:56:48.712913Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-13T13:56:50.109Z\"}}], \"cna\": {\"title\": \"powerpc/pseries/vas: Add close() callback in vas_vm_ops struct\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The vulnerable state is created entirely through local syscalls on the `/dev/crypto/nx-gzip` character device (open, `VAS_TX_WIN_OPEN` ioctl, mmap, munmap). No network or remote peer data is involved.\\nAC:L - The attacker deterministically plants the dangling `task_ref.vma` pointer with a plain mmap/munmap sequence \\u2014 there is no race to win and the poisoned state persists indefinitely, so the attacker can groom `vm_area_cachep` (which is `SLAB_ACCOUNT` without `SLAB_NO_MERGE`) at leisure and across many fds. The consuming event, LPAR migration or CPU DLPAR, is a routine, expected operation on the affected PowerVM platform \\u2014 indeed the vulnerable code exists solely to support it.\\nPR:L - Only an unprivileged local user account is needed; `Documentation/arch/powerpc/vas-api.rst` states outright that \\\"No special privileges are needed to open the device,\\\" and distributions ship the nx-gzip node world-accessible because libnxz/zlib-NX is a userspace compression library. No capability check exists in `coproc_open()`, `coproc_ioc_tx_win_open()`, or `coproc_mmap()`.\\nUI:N - No victim is lured into any action; the triggering Live Partition Mobility event is initiated externally by the hypervisor/HMC as routine platform maintenance, entirely outside any OS user\u0027s interaction with the attacker.\\nS:U - The use-after-free is consumed inside the kernel and its impact stays within the kernel\u0027s own security authority; no hypervisor, IOMMU, or VM boundary is crossed.\\nC:H - KASAN confirms an 8-byte slab-use-after-free read of a freed `vm_area_struct`, and reuse of that 168-byte mergeable-cache object lets the attacker place controlled data there and have the kernel dereference it, yielding kernel memory disclosure primitives well beyond a bounded leak.\\nI:H - The freed object is not merely read \\u2014 it is passed to `zap_page_range_single()`, so attacker-groomed `vm_mm`/`vm_start`/`vm_end` fields drive page-table teardown against an arbitrary address space while only the unrelated window owner\u0027s `mmap_lock` is held, giving a powerful controlled-pointer write/corruption primitive suitable for privilege escalation.\\nA:H - The bug is a confirmed slab-use-after-free that produces a KASAN BUG/oops during partition migration, and unmapping another mm\u0027s pages without its `mmap_lock` readily leads to page-table corruption and kernel panic, taking down the entire LPAR at the worst possible moment.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"37e6764895ef7431f45ff603a548549d409993d2\", \"lessThan\": \"8b2282b5084521254a2cd9742a3f4e1d5b77f843\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"37e6764895ef7431f45ff603a548549d409993d2\", \"lessThan\": \"b7f60ffdfd96f8fc826f1d61a1c6067d828e20b9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"37e6764895ef7431f45ff603a548549d409993d2\", \"lessThan\": \"6d9cd27105459f169993a4c5f216499a946dbf34\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"37e6764895ef7431f45ff603a548549d409993d2\", \"lessThan\": \"05aa156e156ef3168e7ab8a68721945196495c17\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/powerpc/platforms/book3s/vas-api.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.18\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.18\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.123\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.69\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/powerpc/platforms/book3s/vas-api.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8b2282b5084521254a2cd9742a3f4e1d5b77f843\"}, {\"url\": \"https://git.kernel.org/stable/c/b7f60ffdfd96f8fc826f1d61a1c6067d828e20b9\"}, {\"url\": \"https://git.kernel.org/stable/c/6d9cd27105459f169993a4c5f216499a946dbf34\"}, {\"url\": \"https://git.kernel.org/stable/c/05aa156e156ef3168e7ab8a68721945196495c17\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\npowerpc/pseries/vas: Add close() callback in vas_vm_ops struct\\n\\nThe mapping VMA address is saved in VAS window struct when the\\npaste address is mapped. This VMA address is used during migration\\nto unmap the paste address if the window is active. The paste\\naddress mapping will be removed when the window is closed or with\\nthe munmap(). But the VMA address in the VAS window is not updated\\nwith munmap() which is causing invalid access during migration.\\n\\nThe KASAN report shows:\\n[16386.254991] BUG: KASAN: slab-use-after-free in reconfig_close_windows+0x1a0/0x4e8\\n[16386.255043] Read of size 8 at addr c00000014a819670 by task drmgr/696928\\n\\n[16386.255096] CPU: 29 UID: 0 PID: 696928 Comm: drmgr Kdump: loaded Tainted: G    B              6.11.0-rc5-nxgzip #2\\n[16386.255128] Tainted: [B]=BAD_PAGE\\n[16386.255148] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.00 (NH1110_016) hv:phyp pSeries\\n[16386.255181] Call Trace:\\n[16386.255202] [c00000016b297660] [c0000000018ad0ac] dump_stack_lvl+0x84/0xe8 (unreliable)\\n[16386.255246] [c00000016b297690] [c0000000006e8a90] print_report+0x19c/0x764\\n[16386.255285] [c00000016b297760] [c0000000006e9490] kasan_report+0x128/0x1f8\\n[16386.255309] [c00000016b297880] [c0000000006eb5c8] __asan_load8+0xac/0xe0\\n[16386.255326] [c00000016b2978a0] [c00000000013f898] reconfig_close_windows+0x1a0/0x4e8\\n[16386.255343] [c00000016b297990] [c000000000140e58] vas_migration_handler+0x3a4/0x3fc\\n[16386.255368] [c00000016b297a90] [c000000000128848] pseries_migrate_partition+0x4c/0x4c4\\n...\\n\\n[16386.256136] Allocated by task 696554 on cpu 31 at 16377.277618s:\\n[16386.256149]  kasan_save_stack+0x34/0x68\\n[16386.256163]  kasan_save_track+0x34/0x80\\n[16386.256175]  kasan_save_alloc_info+0x58/0x74\\n[16386.256196]  __kasan_slab_alloc+0xb8/0xdc\\n[16386.256209]  kmem_cache_alloc_noprof+0x200/0x3d0\\n[16386.256225]  vm_area_alloc+0x44/0x150\\n[16386.256245]  mmap_region+0x214/0x10c4\\n[16386.256265]  do_mmap+0x5fc/0x750\\n[16386.256277]  vm_mmap_pgoff+0x14c/0x24c\\n[16386.256292]  ksys_mmap_pgoff+0x20c/0x348\\n[16386.256303]  sys_mmap+0xd0/0x160\\n...\\n\\n[16386.256350] Freed by task 0 on cpu 31 at 16386.204848s:\\n[16386.256363]  kasan_save_stack+0x34/0x68\\n[16386.256374]  kasan_save_track+0x34/0x80\\n[16386.256384]  kasan_save_free_info+0x64/0x10c\\n[16386.256396]  __kasan_slab_free+0x120/0x204\\n[16386.256415]  kmem_cache_free+0x128/0x450\\n[16386.256428]  vm_area_free_rcu_cb+0xa8/0xd8\\n[16386.256441]  rcu_do_batch+0x2c8/0xcf0\\n[16386.256458]  rcu_core+0x378/0x3c4\\n[16386.256473]  handle_softirqs+0x20c/0x60c\\n[16386.256495]  do_softirq_own_stack+0x6c/0x88\\n[16386.256509]  do_softirq_own_stack+0x58/0x88\\n[16386.256521]  __irq_exit_rcu+0x1a4/0x20c\\n[16386.256533]  irq_exit+0x20/0x38\\n[16386.256544]  interrupt_async_exit_prepare.constprop.0+0x18/0x2c\\n...\\n\\n[16386.256717] Last potentially related work creation:\\n[16386.256729]  kasan_save_stack+0x34/0x68\\n[16386.256741]  __kasan_record_aux_stack+0xcc/0x12c\\n[16386.256753]  __call_rcu_common.constprop.0+0x94/0xd04\\n[16386.256766]  vm_area_free+0x28/0x3c\\n[16386.256778]  remove_vma+0xf4/0x114\\n[16386.256797]  do_vmi_align_munmap.constprop.0+0x684/0x870\\n[16386.256811]  __vm_munmap+0xe0/0x1f8\\n[16386.256821]  sys_munmap+0x54/0x6c\\n[16386.256830]  system_call_exception+0x1a0/0x4a0\\n[16386.256841]  system_call_vectored_common+0x15c/0x2ec\\n\\n[16386.256868] The buggy address belongs to the object at c00000014a819670\\n                which belongs to the cache vm_area_struct of size 168\\n[16386.256887] The buggy address is located 0 bytes inside of\\n                freed 168-byte region [c00000014a819670, c00000014a819718)\\n\\n[16386.256915] The buggy address belongs to the physical page:\\n[16386.256928] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14a81\\n[16386.256950] memcg:c0000000ba430001\\n[16386.256961] anon flags: 0x43ffff800000000(node=4|zone=0|lastcpupid=0x7ffff)\\n[16386.256975] page_type: 0xfdffffff(slab)\\n[16386\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.123\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.69\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.8\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13\", \"versionStartIncluding\": \"5.18\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:46:25.642Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-56765\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:46:25.642Z\", \"dateReserved\": \"2024-12-29T11:26:39.762Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-01-06T16:20:43.966Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.