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CVE-2024-57795 (GCVE-0-2024-57795)

Vulnerability from cvelistv5 – Published: 2025-01-15 13:10 – Updated: 2026-08-05 11:46
VLAI
Title
RDMA/rxe: Remove the direct link to net_device
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Remove the direct link to net_device The similar patch in siw is in the link: https://git.kernel.org/rdma/rdma/c/16b87037b48889 This problem also occurred in RXE. The following analyze this problem. In the following Call Traces: " BUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0 net/core/dev.c:8782 Read of size 4 at addr ffff8880554640b0 by task kworker/1:4/5295 CPU: 1 UID: 0 PID: 5295 Comm: kworker/1:4 Not tainted 6.12.0-rc3-syzkaller-00399-g9197b73fd7bb #0 Hardware name: Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: infiniband ib_cache_event_task Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 dev_get_flags+0x188/0x1d0 net/core/dev.c:8782 rxe_query_port+0x12d/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:60 __ib_query_port drivers/infiniband/core/device.c:2111 [inline] ib_query_port+0x168/0x7d0 drivers/infiniband/core/device.c:2143 ib_cache_update+0x1a9/0xb80 drivers/infiniband/core/cache.c:1494 ib_cache_event_task+0xf3/0x1e0 drivers/infiniband/core/cache.c:1568 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> " 1). In the link [1], " infiniband syz2: set down " This means that on 839.350575, the event ib_cache_event_task was sent andi queued in ib_wq. 2). In the link [1], " team0 (unregistering): Port device team_slave_0 removed " It indicates that before 843.251853, the net device should be freed. 3). In the link [1], " BUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0 " This means that on 850.559070, this slab-use-after-free problem occurred. In all, on 839.350575, the event ib_cache_event_task was sent and queued in ib_wq, before 843.251853, the net device veth was freed. on 850.559070, this event was executed, and the mentioned freed net device was called. Thus, the above call trace occurred. [1] https://syzkaller.appspot.com/x/log.txt?x=12e7025f980000
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-02-13 13:56 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < 32ca3557d968e662957131374a5f81c9c9cdbba8 (git)
Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < 9f6f54e6a6863131442b40e14d1792b090c7ce21 (git)
Affected: 8700e3e7c4857d28ebaa824509934556da0b3e76 , < 2ac5415022d16d63d912a39a06f32f1f51140261 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.9 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Remove the direct link to net_device\n\nThe similar patch in siw is in the link:\nhttps://git.kernel.org/rdma/rdma/c/16b87037b48889\n\nThis problem also occurred in RXE. The following analyze this problem.\nIn the following Call Traces:\n\"\nBUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0 net/core/dev.c:8782\nRead of size 4 at addr ffff8880554640b0 by task kworker/1:4/5295\n\nCPU: 1 UID: 0 PID: 5295 Comm: kworker/1:4 Not tainted\n6.12.0-rc3-syzkaller-00399-g9197b73fd7bb #0\nHardware name: Google Compute Engine/Google Compute Engine,\nBIOS Google 09/13/2024\nWorkqueue: infiniband ib_cache_event_task\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n dev_get_flags+0x188/0x1d0 net/core/dev.c:8782\n rxe_query_port+0x12d/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:60\n __ib_query_port drivers/infiniband/core/device.c:2111 [inline]\n ib_query_port+0x168/0x7d0 drivers/infiniband/core/device.c:2143\n ib_cache_update+0x1a9/0xb80 drivers/infiniband/core/cache.c:1494\n ib_cache_event_task+0xf3/0x1e0 drivers/infiniband/core/cache.c:1568\n process_one_work kernel/workqueue.c:3229 [inline]\n process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310\n worker_thread+0x870/0xd30 kernel/workqueue.c:3391\n kthread+0x2f2/0x390 kernel/kthread.c:389\n ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n \u003c/TASK\u003e\n\"\n\n1). In the link [1],\n\n\"\n infiniband syz2: set down\n\"\n\nThis means that on 839.350575, the event ib_cache_event_task was sent andi\nqueued in ib_wq.\n\n2). In the link [1],\n\n\"\n team0 (unregistering): Port device team_slave_0 removed\n\"\n\nIt indicates that before 843.251853, the net device should be freed.\n\n3). In the link [1],\n\n\"\n BUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0\n\"\n\nThis means that on 850.559070, this slab-use-after-free problem occurred.\n\nIn all, on 839.350575, the event ib_cache_event_task was sent and queued\nin ib_wq,\n\nbefore 843.251853, the net device veth was freed.\n\non 850.559070, this event was executed, and the mentioned freed net device\nwas called. Thus, the above call trace occurred.\n\n[1] https://syzkaller.appspot.com/x/log.txt?x=12e7025f980000"
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              "value": "AV:L - The dangling `rxe-\u003endev` is dereferenced from local paths \u2014 RDMA netlink link add/del, netdev up/down/unregister events, and uverbs QUERY_PORT/ATTACH_MCAST on /dev/infiniband/uverbsN. Incoming RoCEv2 packets use `skb-\u003edev` rather than the cached pointer, so there is no remote trigger.\nAC:L - The attacker drives both halves deterministically: bring the netdev down to queue `ib_cache_event_task`, then delete the netdev so `free_netdevs()` drops the last reference before `flush_workqueue(ib_wq)` runs the pending work. syzbot reproduced it, and the sequence can be looped until it lands.\nPR:L - On a system with Soft-RoCE already configured, the UAF dereference sites (`rxe_query_port`, `rxe_mcast_add`/`rxe_mcast_del`) are reachable by any local unprivileged user through the world-accessible uverbs character device and sysfs port attributes. This matches the scoring of the same class of RDMA lifetime UAFs (CVE-2025-22085, CVE-2025-38022, CVE-2025-38024).\nUI:N - The entire sequence is performed by the attacker via netlink and verbs calls; no victim action or cooperation is needed.\nS:U - The freed `struct net_device` and the corrupting code both live in the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a slab use-after-free on `struct net_device`; the attacker can spray the freed slab and have `dev_get_flags()`/`netif_running()`/`netdev_name()` read back reclaimed content, and the leaked port state and device-name data flow back to userspace via query_port and dev_info.\nI:H - `dev_mc_add()`/`dev_mc_del()` on the freed netdev perform list manipulation into reclaimed slab memory and then indirect-call `dev-\u003enetdev_ops-\u003endo_set_rx_mode` through a freed function-pointer table, giving a write and control-flow-hijack primitive.\nA:H - The confirmed KASAN slab-use-after-free read in `dev_get_flags()` panics the kernel with `panic_on_warn`/KASAN and readily oopses otherwise, and the multicast paths corrupt freed heap state leading to further crashes."
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            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Remove the direct link to net_device\n\nThe similar patch in siw is in the link:\nhttps://git.kernel.org/rdma/rdma/c/16b87037b48889\n\nThis problem also occurred in RXE. The following analyze this problem.\nIn the following Call Traces:\n\"\nBUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0 net/core/dev.c:8782\nRead of size 4 at addr ffff8880554640b0 by task kworker/1:4/5295\n\nCPU: 1 UID: 0 PID: 5295 Comm: kworker/1:4 Not tainted\n6.12.0-rc3-syzkaller-00399-g9197b73fd7bb #0\nHardware name: Google Compute Engine/Google Compute Engine,\nBIOS Google 09/13/2024\nWorkqueue: infiniband ib_cache_event_task\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n dev_get_flags+0x188/0x1d0 net/core/dev.c:8782\n rxe_query_port+0x12d/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:60\n __ib_query_port drivers/infiniband/core/device.c:2111 [inline]\n ib_query_port+0x168/0x7d0 drivers/infiniband/core/device.c:2143\n ib_cache_update+0x1a9/0xb80 drivers/infiniband/core/cache.c:1494\n ib_cache_event_task+0xf3/0x1e0 drivers/infiniband/core/cache.c:1568\n process_one_work kernel/workqueue.c:3229 [inline]\n process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310\n worker_thread+0x870/0xd30 kernel/workqueue.c:3391\n kthread+0x2f2/0x390 kernel/kthread.c:389\n ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n \u003c/TASK\u003e\n\"\n\n1). In the link [1],\n\n\"\n infiniband syz2: set down\n\"\n\nThis means that on 839.350575, the event ib_cache_event_task was sent andi\nqueued in ib_wq.\n\n2). In the link [1],\n\n\"\n team0 (unregistering): Port device team_slave_0 removed\n\"\n\nIt indicates that before 843.251853, the net device should be freed.\n\n3). In the link [1],\n\n\"\n BUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0\n\"\n\nThis means that on 850.559070, this slab-use-after-free problem occurred.\n\nIn all, on 839.350575, the event ib_cache_event_task was sent and queued\nin ib_wq,\n\nbefore 843.251853, the net device veth was freed.\n\non 850.559070, this event was executed, and the mentioned freed net device\nwas called. Thus, the above call trace occurred.\n\n[1] https://syzkaller.appspot.com/x/log.txt?x=12e7025f980000"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: RDMA/rxe: eliminar el enlace directo a net_device El parche similar en siw se encuentra en el enlace: https://git.kernel.org/rdma/rdma/c/16b87037b48889 Este problema tambi\u00e9n se produjo en RXE. A continuaci\u00f3n se analiza este problema. En los siguientes seguimientos de llamadas: \"ERROR: KASAN: slab-use-after-free en dev_get_flags+0x188/0x1d0 net/core/dev.c:8782 Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff8880554640b0 por la tarea kworker/1:4/5295 CPU: 1 UID: 0 PID: 5295 Comm: kworker/1:4 No contaminado 6.12.0-rc3-syzkaller-00399-g9197b73fd7bb #0 Nombre del hardware: Google Compute Engine/Google Compute Engine, BIOS Google 13/09/2024 Cola de trabajo: infiniband ib_cache_event_task Seguimiento de llamadas:  __dump_stack lib/dump_stack.c:94 [en l\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 imprimir_direcci\u00f3n_descripci\u00f3n mm/kasan/report.c:377 [en l\u00ednea] imprimir_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 dev_get_flags+0x188/0x1d0 net/core/dev.c:8782 rxe_query_port+0x12d/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:60 __ib_query_port drivers/infiniband/core/device.c:2111 [en l\u00ednea] ib_query_port+0x168/0x7d0 drivers/infiniband/core/device.c:2143 ib_cache_update+0x1a9/0xb80 drivers/infiniband/core/cache.c:1494 ib_cache_event_task+0xf3/0x1e0 drivers/infiniband/core/cache.c:1568 process_one_work kernel/workqueue.c:3229 [en l\u00ednea] process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244  \" 1). En el enlace [1], \" infiniband syz2: set down \" Esto significa que en 839.350575, se envi\u00f3 el evento ib_cache_event_task y se puso en cola en ib_wq. 2). En el enlace [1], \" team0 (unregistering): Port device team_slave_0 removed \" Esto indica que antes de 843.251853, se debe liberar el dispositivo de red. 3). En el enlace [1], \" BUG: KASAN: slab-use-after-free en dev_get_flags+0x188/0x1d0 \" Esto significa que en 850.559070, ocurri\u00f3 este problema de slab-use-after-free. En total, el 839.350575, se envi\u00f3 el evento ib_cache_event_task y se puso en cola en ib_wq, antes del 843.251853, se liber\u00f3 el dispositivo de red veth. El 850.559070, se ejecut\u00f3 este evento y se llam\u00f3 al dispositivo de red liberado mencionado. Por lo tanto, se produjo el seguimiento de la llamada anterior. [1] https://syzkaller.appspot.com/x/log.txt?x=12e7025f980000"
          }
        ],
        "id": "CVE-2024-57795",
        "lastModified": "2026-06-17T08:14:03.390",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "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"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2024-57795",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-13T13:56:40.628550Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-01-15T13:15:11.563",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/2ac5415022d16d63d912a39a06f32f1f51140261"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/32ca3557d968e662957131374a5f81c9c9cdbba8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9f6f54e6a6863131442b40e14d1792b090c7ce21"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T13:43:09+00:00",
      "cve": "CVE-2024-57795",
      "id": "CVE-2024-57795",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "92",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/rxe: Remove the direct link to net_device",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-57795.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T16:37:57Z",
      "cve": "CVE-2024-57795",
      "id": "CVE-2024-57795",
      "initial_release_date": "2025-01-16T03:49:43Z",
      "product_status:known_affected": "609",
      "product_status:known_not_affected": "221",
      "product_status:recommended": "358",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-57795",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-57795.json",
      "version": "66"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "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"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2024-57795",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-02-13T13:56:40.628550Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-416",
                    "description": "CWE-416 Use After Free",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-02-13T13:56:41.933Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/infiniband/sw/rxe/rxe.c",
                "drivers/infiniband/sw/rxe/rxe.h",
                "drivers/infiniband/sw/rxe/rxe_mcast.c",
                "drivers/infiniband/sw/rxe/rxe_net.c",
                "drivers/infiniband/sw/rxe/rxe_verbs.c",
                "drivers/infiniband/sw/rxe/rxe_verbs.h"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "32ca3557d968e662957131374a5f81c9c9cdbba8",
                  "status": "affected",
                  "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
                  "versionType": "git"
                },
                {
                  "lessThan": "9f6f54e6a6863131442b40e14d1792b090c7ce21",
                  "status": "affected",
                  "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
                  "versionType": "git"
                },
                {
                  "lessThan": "2ac5415022d16d63d912a39a06f32f1f51140261",
                  "status": "affected",
                  "version": "8700e3e7c4857d28ebaa824509934556da0b3e76",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/infiniband/sw/rxe/rxe.c",
                "drivers/infiniband/sw/rxe/rxe.h",
                "drivers/infiniband/sw/rxe/rxe_mcast.c",
                "drivers/infiniband/sw/rxe/rxe_net.c",
                "drivers/infiniband/sw/rxe/rxe_verbs.c",
                "drivers/infiniband/sw/rxe/rxe_verbs.h"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "4.8"
                },
                {
                  "lessThan": "4.8",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.120",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.9",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.13",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.120",
                      "versionStartIncluding": "4.8",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.9",
                      "versionStartIncluding": "4.8",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13",
                      "versionStartIncluding": "4.8",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Remove the direct link to net_device\n\nThe similar patch in siw is in the link:\nhttps://git.kernel.org/rdma/rdma/c/16b87037b48889\n\nThis problem also occurred in RXE. The following analyze this problem.\nIn the following Call Traces:\n\"\nBUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0 net/core/dev.c:8782\nRead of size 4 at addr ffff8880554640b0 by task kworker/1:4/5295\n\nCPU: 1 UID: 0 PID: 5295 Comm: kworker/1:4 Not tainted\n6.12.0-rc3-syzkaller-00399-g9197b73fd7bb #0\nHardware name: Google Compute Engine/Google Compute Engine,\nBIOS Google 09/13/2024\nWorkqueue: infiniband ib_cache_event_task\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n dev_get_flags+0x188/0x1d0 net/core/dev.c:8782\n rxe_query_port+0x12d/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:60\n __ib_query_port drivers/infiniband/core/device.c:2111 [inline]\n ib_query_port+0x168/0x7d0 drivers/infiniband/core/device.c:2143\n ib_cache_update+0x1a9/0xb80 drivers/infiniband/core/cache.c:1494\n ib_cache_event_task+0xf3/0x1e0 drivers/infiniband/core/cache.c:1568\n process_one_work kernel/workqueue.c:3229 [inline]\n process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310\n worker_thread+0x870/0xd30 kernel/workqueue.c:3391\n kthread+0x2f2/0x390 kernel/kthread.c:389\n ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n \u003c/TASK\u003e\n\"\n\n1). In the link [1],\n\n\"\n infiniband syz2: set down\n\"\n\nThis means that on 839.350575, the event ib_cache_event_task was sent andi\nqueued in ib_wq.\n\n2). In the link [1],\n\n\"\n team0 (unregistering): Port device team_slave_0 removed\n\"\n\nIt indicates that before 843.251853, the net device should be freed.\n\n3). In the link [1],\n\n\"\n BUG: KASAN: slab-use-after-free in dev_get_flags+0x188/0x1d0\n\"\n\nThis means that on 850.559070, this slab-use-after-free problem occurred.\n\nIn all, on 839.350575, the event ib_cache_event_task was sent and queued\nin ib_wq,\n\nbefore 843.251853, the net device veth was freed.\n\non 850.559070, this event was executed, and the mentioned freed net device\nwas called. Thus, the above call trace occurred.\n\n[1] https://syzkaller.appspot.com/x/log.txt?x=12e7025f980000"
            }
          ],
          "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 dangling `rxe-\u003endev` is dereferenced from local paths \u2014 RDMA netlink link add/del, netdev up/down/unregister events, and uverbs QUERY_PORT/ATTACH_MCAST on /dev/infiniband/uverbsN. Incoming RoCEv2 packets use `skb-\u003edev` rather than the cached pointer, so there is no remote trigger.\nAC:L - The attacker drives both halves deterministically: bring the netdev down to queue `ib_cache_event_task`, then delete the netdev so `free_netdevs()` drops the last reference before `flush_workqueue(ib_wq)` runs the pending work. syzbot reproduced it, and the sequence can be looped until it lands.\nPR:L - On a system with Soft-RoCE already configured, the UAF dereference sites (`rxe_query_port`, `rxe_mcast_add`/`rxe_mcast_del`) are reachable by any local unprivileged user through the world-accessible uverbs character device and sysfs port attributes. This matches the scoring of the same class of RDMA lifetime UAFs (CVE-2025-22085, CVE-2025-38022, CVE-2025-38024).\nUI:N - The entire sequence is performed by the attacker via netlink and verbs calls; no victim action or cooperation is needed.\nS:U - The freed `struct net_device` and the corrupting code both live in the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a slab use-after-free on `struct net_device`; the attacker can spray the freed slab and have `dev_get_flags()`/`netif_running()`/`netdev_name()` read back reclaimed content, and the leaked port state and device-name data flow back to userspace via query_port and dev_info.\nI:H - `dev_mc_add()`/`dev_mc_del()` on the freed netdev perform list manipulation into reclaimed slab memory and then indirect-call `dev-\u003enetdev_ops-\u003endo_set_rx_mode` through a freed function-pointer table, giving a write and control-flow-hijack primitive.\nA:H - The confirmed KASAN slab-use-after-free read in `dev_get_flags()` panics the kernel with `panic_on_warn`/KASAN and readily oopses otherwise, and the multicast paths corrupt freed heap state leading to further crashes."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:46:34.724Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/32ca3557d968e662957131374a5f81c9c9cdbba8"
            },
            {
              "url": "https://git.kernel.org/stable/c/9f6f54e6a6863131442b40e14d1792b090c7ce21"
            },
            {
              "url": "https://git.kernel.org/stable/c/2ac5415022d16d63d912a39a06f32f1f51140261"
            }
          ],
          "title": "RDMA/rxe: Remove the direct link to net_device",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-57795",
        "datePublished": "2025-01-15T13:10:23.880Z",
        "dateReserved": "2025-01-15T13:08:59.657Z",
        "dateUpdated": "2026-08-05T11:46:34.724Z",
        "state": "PUBLISHED"
      },
      "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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.