{
  "cveId": "CVE-2026-43349",
  "url": "https://patchblox.com/security/cve/CVE-2026-43349",
  "summary": "CVE-2026-43349 is fixed in linux on 1 platform by DEBIAN-CVE-2026-43349 (version 7.0.3-1), released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to avoid uninit-value access in f2fs_s...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to avoid uninit-value access in f2fs_sanity_check_node_footer  syzbot reported a f2fs bug as below:  BUG: KMSAN: uninit-value in f2fs_sanity_check_node_footer\u002B0x374/0xa20 fs/f2fs/node.c:1520  f2fs_sanity_check_node_footer\u002B0x374/0xa20 fs/f2fs/node.c:1520  f2fs_finish_read_bio\u002B0xe1e/0x1d60 fs/f2fs/data.c:177  f2fs_read_end_io\u002B0x6ab/0x2220 fs/f2fs/data.c:-1  bio_endio\u002B0x1006/0x1160 block/bio.c:1792  submit_bio_noacct\u002B0x533/0x2960 block/blk-core.c:891  submit_bio\u002B0x57a/0x620 block/blk-core.c:926  blk_crypto_submit_bio include/linux/blk-crypto.h:203 [inline]  f2fs_submit_read_bio\u002B0x12c/0x360 fs/f2fs/data.c:557  f2fs_submit_page_bio\u002B0xee2/0x1450 fs/f2fs/data.c:775  read_node_folio\u002B0x384/0x4b0 fs/f2fs/node.c:1481  __get_node_folio\u002B0x5db/0x15d0 fs/f2fs/node.c:1576  f2fs_get_inode_folio\u002B0x40/0x50 fs/f2fs/node.c:1623  do_read_inode fs/f2fs/inode.c:425 [inline]  f2fs_iget\u002B0x1209/0x9380 fs/f2fs/inode.c:596  f2fs_fill_super\u002B0x8f5a/0xb2e0 fs/f2fs/super.c:5184  get_tree_bdev_flags\u002B0x6e6/0x920 fs/super.c:1694  get_tree_bdev\u002B0x38/0x50 fs/super.c:1717  f2fs_get_tree\u002B0x35/0x40 fs/f2fs/super.c:5436  vfs_get_tree\u002B0xb3/0x5d0 fs/super.c:1754  fc_mount fs/namespace.c:1193 [inline]  do_new_mount_fc fs/namespace.c:3763 [inline]  do_new_mount\u002B0x885/0x1dd0 fs/namespace.c:3839  path_mount\u002B0x7a2/0x20b0 fs/namespace.c:4159  do_mount fs/namespace.c:4172 [inline]  __do_sys_mount fs/namespace.c:4361 [inline]  __se_sys_mount\u002B0x704/0x7f0 fs/namespace.c:4338  __x64_sys_mount\u002B0xe4/0x150 fs/namespace.c:4338  x64_sys_call\u002B0x39f0/0x3ea0 arch/x86/include/generated/asm/syscalls_64.h:166  do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]  do_syscall_64\u002B0x134/0xf80 arch/x86/entry/syscall_64.c:94  entry_SYSCALL_64_after_hwframe\u002B0x77/0x7f  The root cause is: in f2fs_finish_read_bio(), we may access uninit data in folio if we failed to read the data from device into folio, let\u0027s add a check condition to avoid such issue.",
  "published": "2026-05-08T14:16:44Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00112,
  "epssPercentile": 0.01403,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.3-1",
      "fix": "DEBIAN-CVE-2026-43349",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-43349",
      "released": "2026-05-15T16:01:09Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}