{
  "cveId": "CVE-2022-49352",
  "url": "https://patchblox.com/security/cve/CVE-2022-49352",
  "summary": "CVE-2022-49352 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49352, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ext4: fix warning in ext4_handle_inode_extension...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ext4: fix warning in ext4_handle_inode_extension  We got issue as follows: EXT4-fs error (device loop0) in ext4_reserve_inode_write:5741: Out of memory EXT4-fs error (device loop0): ext4_setattr:5462: inode #13: comm syz-executor.0: mark_inode_dirty error EXT4-fs error (device loop0) in ext4_setattr:5519: Out of memory EXT4-fs error (device loop0): ext4_ind_map_blocks:595: inode #13: comm syz-executor.0: Can\u0027t allocate blocks for non-extent mapped inodes with bigalloc ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4361 at fs/ext4/file.c:301 ext4_file_write_iter\u002B0x11c9/0x1220 Modules linked in: CPU: 1 PID: 4361 Comm: syz-executor.0 Not tainted 5.10.0\u002B #1 RIP: 0010:ext4_file_write_iter\u002B0x11c9/0x1220 RSP: 0018:ffff924d80b27c00 EFLAGS: 00010282 RAX: ffffffff815a3379 RBX: 0000000000000000 RCX: 000000003b000000 RDX: ffff924d81601000 RSI: 00000000000009cc RDI: 00000000000009cd RBP: 000000000000000d R08: ffffffffbc5a2c6b R09: 0000902e0e52a96f R10: ffff902e2b7c1b40 R11: ffff902e2b7c1b40 R12: 000000000000000a R13: 0000000000000001 R14: ffff902e0e52aa10 R15: ffffffffffffff8b FS:  00007f81a7f65700(0000) GS:ffff902e3bc80000(0000) knlGS:0000000000000000 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000012db88001 CR4: 00000000003706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace:  do_iter_readv_writev\u002B0x2e5/0x360  do_iter_write\u002B0x112/0x4c0  do_pwritev\u002B0x1e5/0x390  __x64_sys_pwritev2\u002B0x7e/0xa0  do_syscall_64\u002B0x37/0x50  entry_SYSCALL_64_after_hwframe\u002B0x44/0xa9  Above issue may happen as follows: Assume inode.i_size=4096 EXT4_I(inode)-\u003Ei_disksize=4096  step 1: set inode-\u003Ei_isize = 8192 ext4_setattr   if (attr-\u003Eia_size != inode-\u003Ei_size)     EXT4_I(inode)-\u003Ei_disksize = attr-\u003Eia_size;     rc = ext4_mark_inode_dirty        ext4_reserve_inode_write           ext4_get_inode_loc             __ext4_get_inode_loc               sb_getblk --\u003E return -ENOMEM    ...    if (!error)  -\u003Ewill not update i_size      i_size_write(inode, attr-\u003Eia_size); Now: inode.i_size=4096 EXT4_I(inode)-\u003Ei_disksize=8192  step 2: Direct write 4096 bytes ext4_file_write_iter  ext4_dio_write_iter    iomap_dio_rw -\u003Ereturn error  if (extend)    ext4_handle_inode_extension      WARN_ON_ONCE(i_size_read(inode) \u003C EXT4_I(inode)-\u003Ei_disksize); -\u003EThen trigger warning.  To solve above issue, if mark inode dirty failed in ext4_setattr just set \u0027EXT4_I(inode)-\u003Ei_disksize\u0027 with old value.",
  "published": "2025-02-26T07:01:11Z",
  "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": 0.00281,
  "epssPercentile": 0.20671,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49352",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49352",
      "released": "2025-02-26T07:01:11Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49352",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49352",
      "released": "2025-02-26T07:01:11Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.18.5-1",
      "fix": "DEBIAN-CVE-2022-49352",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-49352",
      "released": "2025-02-26T07:01:11Z"
    }
  ],
  "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"
  }
}