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CVE-2022-50442 (GCVE-0-2022-50442)

Vulnerability from cvelistv5 – Published: 2025-10-01 11:42 – Updated: 2026-08-15 12:23
VLAI
Title
fs/ntfs3: Validate buffer length while parsing index
Summary
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Validate buffer length while parsing index indx_read is called when we have some NTFS directory operations that need more information from the index buffers. This adds a sanity check to make sure the returned index buffer length is legit, or we may have some out-of-bound memory accesses. [ 560.897595] BUG: KASAN: slab-out-of-bounds in hdr_find_e.isra.0+0x10c/0x320 [ 560.898321] Read of size 2 at addr ffff888009497238 by task exp/245 [ 560.898760] [ 560.899129] CPU: 0 PID: 245 Comm: exp Not tainted 6.0.0-rc6 #37 [ 560.899505] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 [ 560.900170] Call Trace: [ 560.900407] <TASK> [ 560.900732] dump_stack_lvl+0x49/0x63 [ 560.901108] print_report.cold+0xf5/0x689 [ 560.901395] ? hdr_find_e.isra.0+0x10c/0x320 [ 560.901716] kasan_report+0xa7/0x130 [ 560.901950] ? hdr_find_e.isra.0+0x10c/0x320 [ 560.902208] __asan_load2+0x68/0x90 [ 560.902427] hdr_find_e.isra.0+0x10c/0x320 [ 560.902846] ? cmp_uints+0xe0/0xe0 [ 560.903363] ? cmp_sdh+0x90/0x90 [ 560.903883] ? ntfs_bread_run+0x190/0x190 [ 560.904196] ? rwsem_down_read_slowpath+0x750/0x750 [ 560.904969] ? ntfs_fix_post_read+0xe0/0x130 [ 560.905259] ? __kasan_check_write+0x14/0x20 [ 560.905599] ? up_read+0x1a/0x90 [ 560.905853] ? indx_read+0x22c/0x380 [ 560.906096] indx_find+0x2ef/0x470 [ 560.906352] ? indx_find_buffer+0x2d0/0x2d0 [ 560.906692] ? __kasan_kmalloc+0x88/0xb0 [ 560.906977] dir_search_u+0x196/0x2f0 [ 560.907220] ? ntfs_nls_to_utf16+0x450/0x450 [ 560.907464] ? __kasan_check_write+0x14/0x20 [ 560.907747] ? mutex_lock+0x8f/0xe0 [ 560.907970] ? __mutex_lock_slowpath+0x20/0x20 [ 560.908214] ? kmem_cache_alloc+0x143/0x4b0 [ 560.908459] ntfs_lookup+0xe0/0x100 [ 560.908788] __lookup_slow+0x116/0x220 [ 560.909050] ? lookup_fast+0x1b0/0x1b0 [ 560.909309] ? lookup_fast+0x13f/0x1b0 [ 560.909601] walk_component+0x187/0x230 [ 560.909944] link_path_walk.part.0+0x3f0/0x660 [ 560.910285] ? handle_lookup_down+0x90/0x90 [ 560.910618] ? path_init+0x642/0x6e0 [ 560.911084] ? percpu_counter_add_batch+0x6e/0xf0 [ 560.912559] ? __alloc_file+0x114/0x170 [ 560.913008] path_openat+0x19c/0x1d10 [ 560.913419] ? getname_flags+0x73/0x2b0 [ 560.913815] ? kasan_save_stack+0x3a/0x50 [ 560.914125] ? kasan_save_stack+0x26/0x50 [ 560.914542] ? __kasan_slab_alloc+0x6d/0x90 [ 560.914924] ? kmem_cache_alloc+0x143/0x4b0 [ 560.915339] ? getname_flags+0x73/0x2b0 [ 560.915647] ? getname+0x12/0x20 [ 560.916114] ? __x64_sys_open+0x4c/0x60 [ 560.916460] ? path_lookupat.isra.0+0x230/0x230 [ 560.916867] ? __isolate_free_page+0x2e0/0x2e0 [ 560.917194] do_filp_open+0x15c/0x1f0 [ 560.917448] ? may_open_dev+0x60/0x60 [ 560.917696] ? expand_files+0xa4/0x3a0 [ 560.917923] ? __kasan_check_write+0x14/0x20 [ 560.918185] ? _raw_spin_lock+0x88/0xdb [ 560.918409] ? _raw_spin_lock_irqsave+0x100/0x100 [ 560.918783] ? _find_next_bit+0x4a/0x130 [ 560.919026] ? _raw_spin_unlock+0x19/0x40 [ 560.919276] ? alloc_fd+0x14b/0x2d0 [ 560.919635] do_sys_openat2+0x32a/0x4b0 [ 560.920035] ? file_open_root+0x230/0x230 [ 560.920336] ? __rcu_read_unlock+0x5b/0x280 [ 560.920813] do_sys_open+0x99/0xf0 [ 560.921208] ? filp_open+0x60/0x60 [ 560.921482] ? exit_to_user_mode_prepare+0x49/0x180 [ 560.921867] __x64_sys_open+0x4c/0x60 [ 560.922128] do_syscall_64+0x3b/0x90 [ 560.922369] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 560.923030] RIP: 0033:0x7f7dff2e4469 [ 560.923681] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 088 [ 560.924451] RSP: 002b:00007ffd41a210b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000002 [ 560.925168] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7dff2e4469 [ 560.925655] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ---truncated---
Severity
8.4 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 3cd9e5b41b83bb57ac3cf9888f9fef2a6ef8ed96 (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < b15374365c9d10445ea7d66cdf885457a0223fc2 (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 3f6f75e8863f41c8b3dbfd9d99e3963aaca42601 (git)
Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 4d42ecda239cc13738d6fd84d098a32e67b368b9 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.87 , ≤ 5.15.* (semver)
Unaffected: 6.0.17 , ≤ 6.0.* (semver)
Unaffected: 6.1.3 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/index.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3cd9e5b41b83bb57ac3cf9888f9fef2a6ef8ed96",
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "versionType": "git"
            },
            {
              "lessThan": "b15374365c9d10445ea7d66cdf885457a0223fc2",
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "versionType": "git"
            },
            {
              "lessThan": "3f6f75e8863f41c8b3dbfd9d99e3963aaca42601",
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "versionType": "git"
            },
            {
              "lessThan": "4d42ecda239cc13738d6fd84d098a32e67b368b9",
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/index.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.87",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.17",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.3",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Validate buffer length while parsing index\n\nindx_read is called when we have some NTFS directory operations that\nneed more information from the index buffers. This adds a sanity check\nto make sure the returned index buffer length is legit, or we may have\nsome out-of-bound memory accesses.\n\n[  560.897595] BUG: KASAN: slab-out-of-bounds in hdr_find_e.isra.0+0x10c/0x320\n[  560.898321] Read of size 2 at addr ffff888009497238 by task exp/245\n[  560.898760]\n[  560.899129] CPU: 0 PID: 245 Comm: exp Not tainted 6.0.0-rc6 #37\n[  560.899505] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014\n[  560.900170] Call Trace:\n[  560.900407]  \u003cTASK\u003e\n[  560.900732]  dump_stack_lvl+0x49/0x63\n[  560.901108]  print_report.cold+0xf5/0x689\n[  560.901395]  ? hdr_find_e.isra.0+0x10c/0x320\n[  560.901716]  kasan_report+0xa7/0x130\n[  560.901950]  ? hdr_find_e.isra.0+0x10c/0x320\n[  560.902208]  __asan_load2+0x68/0x90\n[  560.902427]  hdr_find_e.isra.0+0x10c/0x320\n[  560.902846]  ? cmp_uints+0xe0/0xe0\n[  560.903363]  ? cmp_sdh+0x90/0x90\n[  560.903883]  ? ntfs_bread_run+0x190/0x190\n[  560.904196]  ? rwsem_down_read_slowpath+0x750/0x750\n[  560.904969]  ? ntfs_fix_post_read+0xe0/0x130\n[  560.905259]  ? __kasan_check_write+0x14/0x20\n[  560.905599]  ? up_read+0x1a/0x90\n[  560.905853]  ? indx_read+0x22c/0x380\n[  560.906096]  indx_find+0x2ef/0x470\n[  560.906352]  ? indx_find_buffer+0x2d0/0x2d0\n[  560.906692]  ? __kasan_kmalloc+0x88/0xb0\n[  560.906977]  dir_search_u+0x196/0x2f0\n[  560.907220]  ? ntfs_nls_to_utf16+0x450/0x450\n[  560.907464]  ? __kasan_check_write+0x14/0x20\n[  560.907747]  ? mutex_lock+0x8f/0xe0\n[  560.907970]  ? __mutex_lock_slowpath+0x20/0x20\n[  560.908214]  ? kmem_cache_alloc+0x143/0x4b0\n[  560.908459]  ntfs_lookup+0xe0/0x100\n[  560.908788]  __lookup_slow+0x116/0x220\n[  560.909050]  ? lookup_fast+0x1b0/0x1b0\n[  560.909309]  ? lookup_fast+0x13f/0x1b0\n[  560.909601]  walk_component+0x187/0x230\n[  560.909944]  link_path_walk.part.0+0x3f0/0x660\n[  560.910285]  ? handle_lookup_down+0x90/0x90\n[  560.910618]  ? path_init+0x642/0x6e0\n[  560.911084]  ? percpu_counter_add_batch+0x6e/0xf0\n[  560.912559]  ? __alloc_file+0x114/0x170\n[  560.913008]  path_openat+0x19c/0x1d10\n[  560.913419]  ? getname_flags+0x73/0x2b0\n[  560.913815]  ? kasan_save_stack+0x3a/0x50\n[  560.914125]  ? kasan_save_stack+0x26/0x50\n[  560.914542]  ? __kasan_slab_alloc+0x6d/0x90\n[  560.914924]  ? kmem_cache_alloc+0x143/0x4b0\n[  560.915339]  ? getname_flags+0x73/0x2b0\n[  560.915647]  ? getname+0x12/0x20\n[  560.916114]  ? __x64_sys_open+0x4c/0x60\n[  560.916460]  ? path_lookupat.isra.0+0x230/0x230\n[  560.916867]  ? __isolate_free_page+0x2e0/0x2e0\n[  560.917194]  do_filp_open+0x15c/0x1f0\n[  560.917448]  ? may_open_dev+0x60/0x60\n[  560.917696]  ? expand_files+0xa4/0x3a0\n[  560.917923]  ? __kasan_check_write+0x14/0x20\n[  560.918185]  ? _raw_spin_lock+0x88/0xdb\n[  560.918409]  ? _raw_spin_lock_irqsave+0x100/0x100\n[  560.918783]  ? _find_next_bit+0x4a/0x130\n[  560.919026]  ? _raw_spin_unlock+0x19/0x40\n[  560.919276]  ? alloc_fd+0x14b/0x2d0\n[  560.919635]  do_sys_openat2+0x32a/0x4b0\n[  560.920035]  ? file_open_root+0x230/0x230\n[  560.920336]  ? __rcu_read_unlock+0x5b/0x280\n[  560.920813]  do_sys_open+0x99/0xf0\n[  560.921208]  ? filp_open+0x60/0x60\n[  560.921482]  ? exit_to_user_mode_prepare+0x49/0x180\n[  560.921867]  __x64_sys_open+0x4c/0x60\n[  560.922128]  do_syscall_64+0x3b/0x90\n[  560.922369]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n[  560.923030] RIP: 0033:0x7f7dff2e4469\n[  560.923681] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 088\n[  560.924451] RSP: 002b:00007ffd41a210b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000002\n[  560.925168] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7dff2e4469\n[  560.925655] RDX: 0000000000000000 RSI: 0000000000000002 RDI:\n---truncated---"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached by presenting a crafted NTFS volume to in-kernel ntfs3 (USB/loop/NBD image) so mount or local path lookup runs indx_read\u2192hdr_find_e; there is no network protocol handler involved.\nAC:L - The attacker fully controls INDEX_BUFFER ihdr.used/total on disk, so the slab OOB walk in hdr_find_e is deterministic with no race or uncontrollable memory-layout precondition.\nPR:N - The attacker needs no account on the target\u2014only a malicious NTFS image that root, udisks2/systemd automount, or an image-handling service mounts on their behalf.\nUI:N - On kiosks/desktops/automotive systems that automount removable NTFS media, mount alone runs ntfs_extend_init\u2192dir_search_u\u2192indx_find\u2192indx_read when $Extend (or other system dirs) use external index buffers, with no further deliberate victim action.\nS:U - The OOB accesses corrupt host kernel heap within the same OS security authority as ntfs3; this is not a VM escape, IOMMU bypass, or sandbox boundary crossing.\nC:H - KASAN documents a slab-out-of-bounds read in hdr_find_e past the kmalloc\u2019d INDEX_BUFFER into adjacent heap, and those bytes are consumed as NTFS_DE keys\u2014an unbounded kernel-memory disclosure per OOB-read guidance.\nI:H - The same unchecked indx_read buffer feeds indx_insert_into_buffer/hdr_insert_de, which memmove through attacker-inflated ihdr.used past the real allocation, yielding a heap write primitive suitable for control-flow hijack.\nA:H - The commit\u2019s KASAN slab-out-of-bounds fault in hdr_find_e oopses/panics the kernel, fully denying availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-15T12:23:30.848Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3cd9e5b41b83bb57ac3cf9888f9fef2a6ef8ed96"
        },
        {
          "url": "https://git.kernel.org/stable/c/b15374365c9d10445ea7d66cdf885457a0223fc2"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f6f75e8863f41c8b3dbfd9d99e3963aaca42601"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d42ecda239cc13738d6fd84d098a32e67b368b9"
        }
      ],
      "title": "fs/ntfs3: Validate buffer length while parsing index",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50442",
    "datePublished": "2025-10-01T11:42:18.012Z",
    "dateReserved": "2025-09-17T14:53:07.010Z",
    "dateUpdated": "2026-08-15T12:23:30.848Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-50442",
      "date": "2026-09-19",
      "epss": "0.00167",
      "percentile": "0.06442"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "fs/ntfs3/index.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "3cd9e5b41b83bb57ac3cf9888f9fef2a6ef8ed96",
                    "status": "affected",
                    "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "b15374365c9d10445ea7d66cdf885457a0223fc2",
                    "status": "affected",
                    "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "3f6f75e8863f41c8b3dbfd9d99e3963aaca42601",
                    "status": "affected",
                    "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4d42ecda239cc13738d6fd84d098a32e67b368b9",
                    "status": "affected",
                    "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "fs/ntfs3/index.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.15"
                  },
                  {
                    "lessThan": "5.15",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.87",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.0.*",
                    "status": "unaffected",
                    "version": "6.0.17",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.3",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.2",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "AF34DC7D-4D5D-4D9C-B1B4-FAE010E910F2",
                    "versionEndExcluding": "5.15.87",
                    "versionStartIncluding": "5.15",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "05B2AE8A-556C-47C1-9119-DBAC5EB60947",
                    "versionEndExcluding": "6.0.17",
                    "versionStartIncluding": "5.16",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "70594F60-3413-4969-AFD7-965266760EA6",
                    "versionEndExcluding": "6.1.3",
                    "versionStartIncluding": "6.1",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Validate buffer length while parsing index\n\nindx_read is called when we have some NTFS directory operations that\nneed more information from the index buffers. This adds a sanity check\nto make sure the returned index buffer length is legit, or we may have\nsome out-of-bound memory accesses.\n\n[  560.897595] BUG: KASAN: slab-out-of-bounds in hdr_find_e.isra.0+0x10c/0x320\n[  560.898321] Read of size 2 at addr ffff888009497238 by task exp/245\n[  560.898760]\n[  560.899129] CPU: 0 PID: 245 Comm: exp Not tainted 6.0.0-rc6 #37\n[  560.899505] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014\n[  560.900170] Call Trace:\n[  560.900407]  \u003cTASK\u003e\n[  560.900732]  dump_stack_lvl+0x49/0x63\n[  560.901108]  print_report.cold+0xf5/0x689\n[  560.901395]  ? hdr_find_e.isra.0+0x10c/0x320\n[  560.901716]  kasan_report+0xa7/0x130\n[  560.901950]  ? hdr_find_e.isra.0+0x10c/0x320\n[  560.902208]  __asan_load2+0x68/0x90\n[  560.902427]  hdr_find_e.isra.0+0x10c/0x320\n[  560.902846]  ? cmp_uints+0xe0/0xe0\n[  560.903363]  ? cmp_sdh+0x90/0x90\n[  560.903883]  ? ntfs_bread_run+0x190/0x190\n[  560.904196]  ? rwsem_down_read_slowpath+0x750/0x750\n[  560.904969]  ? ntfs_fix_post_read+0xe0/0x130\n[  560.905259]  ? __kasan_check_write+0x14/0x20\n[  560.905599]  ? up_read+0x1a/0x90\n[  560.905853]  ? indx_read+0x22c/0x380\n[  560.906096]  indx_find+0x2ef/0x470\n[  560.906352]  ? indx_find_buffer+0x2d0/0x2d0\n[  560.906692]  ? __kasan_kmalloc+0x88/0xb0\n[  560.906977]  dir_search_u+0x196/0x2f0\n[  560.907220]  ? ntfs_nls_to_utf16+0x450/0x450\n[  560.907464]  ? __kasan_check_write+0x14/0x20\n[  560.907747]  ? mutex_lock+0x8f/0xe0\n[  560.907970]  ? __mutex_lock_slowpath+0x20/0x20\n[  560.908214]  ? kmem_cache_alloc+0x143/0x4b0\n[  560.908459]  ntfs_lookup+0xe0/0x100\n[  560.908788]  __lookup_slow+0x116/0x220\n[  560.909050]  ? lookup_fast+0x1b0/0x1b0\n[  560.909309]  ? lookup_fast+0x13f/0x1b0\n[  560.909601]  walk_component+0x187/0x230\n[  560.909944]  link_path_walk.part.0+0x3f0/0x660\n[  560.910285]  ? handle_lookup_down+0x90/0x90\n[  560.910618]  ? path_init+0x642/0x6e0\n[  560.911084]  ? percpu_counter_add_batch+0x6e/0xf0\n[  560.912559]  ? __alloc_file+0x114/0x170\n[  560.913008]  path_openat+0x19c/0x1d10\n[  560.913419]  ? getname_flags+0x73/0x2b0\n[  560.913815]  ? kasan_save_stack+0x3a/0x50\n[  560.914125]  ? kasan_save_stack+0x26/0x50\n[  560.914542]  ? __kasan_slab_alloc+0x6d/0x90\n[  560.914924]  ? kmem_cache_alloc+0x143/0x4b0\n[  560.915339]  ? getname_flags+0x73/0x2b0\n[  560.915647]  ? getname+0x12/0x20\n[  560.916114]  ? __x64_sys_open+0x4c/0x60\n[  560.916460]  ? path_lookupat.isra.0+0x230/0x230\n[  560.916867]  ? __isolate_free_page+0x2e0/0x2e0\n[  560.917194]  do_filp_open+0x15c/0x1f0\n[  560.917448]  ? may_open_dev+0x60/0x60\n[  560.917696]  ? expand_files+0xa4/0x3a0\n[  560.917923]  ? __kasan_check_write+0x14/0x20\n[  560.918185]  ? _raw_spin_lock+0x88/0xdb\n[  560.918409]  ? _raw_spin_lock_irqsave+0x100/0x100\n[  560.918783]  ? _find_next_bit+0x4a/0x130\n[  560.919026]  ? _raw_spin_unlock+0x19/0x40\n[  560.919276]  ? alloc_fd+0x14b/0x2d0\n[  560.919635]  do_sys_openat2+0x32a/0x4b0\n[  560.920035]  ? file_open_root+0x230/0x230\n[  560.920336]  ? __rcu_read_unlock+0x5b/0x280\n[  560.920813]  do_sys_open+0x99/0xf0\n[  560.921208]  ? filp_open+0x60/0x60\n[  560.921482]  ? exit_to_user_mode_prepare+0x49/0x180\n[  560.921867]  __x64_sys_open+0x4c/0x60\n[  560.922128]  do_syscall_64+0x3b/0x90\n[  560.922369]  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n[  560.923030] RIP: 0033:0x7f7dff2e4469\n[  560.923681] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 088\n[  560.924451] RSP: 002b:00007ffd41a210b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000002\n[  560.925168] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7dff2e4469\n[  560.925655] RDX: 0000000000000000 RSI: 0000000000000002 RDI:\n---truncated---"
          }
        ],
        "id": "CVE-2022-50442",
        "lastModified": "2026-08-15T13:17:37.867",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 8.4,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.5,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.2,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-10-01T12:15:36.433",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3cd9e5b41b83bb57ac3cf9888f9fef2a6ef8ed96"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3f6f75e8863f41c8b3dbfd9d99e3963aaca42601"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/4d42ecda239cc13738d6fd84d098a32e67b368b9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b15374365c9d10445ea7d66cdf885457a0223fc2"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-125"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:15:48+00:00",
      "cve": "CVE-2022-50442",
      "id": "CVE-2022-50442",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fs/ntfs3: Validate buffer length while parsing index",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50442.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-31T01:23:38Z",
      "cve": "CVE-2022-50442",
      "id": "CVE-2022-50442",
      "initial_release_date": "2025-10-01T23:32:40Z",
      "product_status:known_not_affected": "523",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50442",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50442.json",
      "version": "9"
    }
  }
}



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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.