{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/namei.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2fa24d0274fbf913b56ee31f15bc01168669d909",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "156451a67b93986fb07c274ef6995ff40766c5ad",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "999cff2b6ce3b45c08abf793bf55534777421327",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "ce1ee2c8827fb6493e91acbd50f664cf2a972c3d",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "17a0bc9bd697f75cfdf9b378d5eb2d7409c91340",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/namei.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.224",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.154",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.78",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix BUG_ON() when directory entry has invalid rec_len\n\nThe rec_len field in the directory entry has to be a multiple of 4.  A\ncorrupted filesystem image can be used to hit a BUG() in\next4_rec_len_to_disk(), called from make_indexed_dir().\n\n ------------[ cut here ]------------\n kernel BUG at fs/ext4/ext4.h:2413!\n ...\n RIP: 0010:make_indexed_dir+0x53f/0x5f0\n ...\n Call Trace:\n  \u003cTASK\u003e\n  ? add_dirent_to_buf+0x1b2/0x200\n  ext4_add_entry+0x36e/0x480\n  ext4_add_nondir+0x2b/0xc0\n  ext4_create+0x163/0x200\n  path_openat+0x635/0xe90\n  do_filp_open+0xb4/0x160\n  ? __create_object.isra.0+0x1de/0x3b0\n  ? _raw_spin_unlock+0x12/0x30\n  do_sys_openat2+0x91/0x150\n  __x64_sys_open+0x6c/0xa0\n  do_syscall_64+0x3c/0x80\n  entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe fix simply adds a call to ext4_check_dir_entry() to validate the\ndirectory entry, returning -EFSCORRUPTED if the entry is invalid."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-01T14:10:27.117Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2fa24d0274fbf913b56ee31f15bc01168669d909"
        },
        {
          "url": "https://git.kernel.org/stable/c/156451a67b93986fb07c274ef6995ff40766c5ad"
        },
        {
          "url": "https://git.kernel.org/stable/c/999cff2b6ce3b45c08abf793bf55534777421327"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce1ee2c8827fb6493e91acbd50f664cf2a972c3d"
        },
        {
          "url": "https://git.kernel.org/stable/c/17a0bc9bd697f75cfdf9b378d5eb2d7409c91340"
        }
      ],
      "title": "ext4: fix BUG_ON() when directory entry has invalid rec_len",
      "x_generator": {
        "engine": "bippy-1.1.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49879",
    "datePublished": "2025-05-01T14:10:27.117Z",
    "dateReserved": "2025-05-01T14:05:17.239Z",
    "dateUpdated": "2025-05-01T14:10:27.117Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49879\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:12.857\",\"lastModified\":\"2025-05-01T15:16:12.857\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: fix BUG_ON() when directory entry has invalid rec_len\\n\\nThe rec_len field in the directory entry has to be a multiple of 4.  A\\ncorrupted filesystem image can be used to hit a BUG() in\\next4_rec_len_to_disk(), called from make_indexed_dir().\\n\\n ------------[ cut here ]------------\\n kernel BUG at fs/ext4/ext4.h:2413!\\n ...\\n RIP: 0010:make_indexed_dir+0x53f/0x5f0\\n ...\\n Call Trace:\\n  \u003cTASK\u003e\\n  ? add_dirent_to_buf+0x1b2/0x200\\n  ext4_add_entry+0x36e/0x480\\n  ext4_add_nondir+0x2b/0xc0\\n  ext4_create+0x163/0x200\\n  path_openat+0x635/0xe90\\n  do_filp_open+0xb4/0x160\\n  ? __create_object.isra.0+0x1de/0x3b0\\n  ? _raw_spin_unlock+0x12/0x30\\n  do_sys_openat2+0x91/0x150\\n  __x64_sys_open+0x6c/0xa0\\n  do_syscall_64+0x3c/0x80\\n  entry_SYSCALL_64_after_hwframe+0x46/0xb0\\n\\nThe fix simply adds a call to ext4_check_dir_entry() to validate the\\ndirectory entry, returning -EFSCORRUPTED if the entry is invalid.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/156451a67b93986fb07c274ef6995ff40766c5ad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/17a0bc9bd697f75cfdf9b378d5eb2d7409c91340\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2fa24d0274fbf913b56ee31f15bc01168669d909\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/999cff2b6ce3b45c08abf793bf55534777421327\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce1ee2c8827fb6493e91acbd50f664cf2a972c3d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}