{
  "cveId": "CVE-2024-33847",
  "url": "https://patchblox.com/security/cve/CVE-2024-33847",
  "summary": "CVE-2024-33847 is fixed in linux on 1 platform, first by DEBIAN-CVE-2024-33847, released June 24, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  f2fs: compress: don\u0027t allow unaligned truncation...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  f2fs: compress: don\u0027t allow unaligned truncation on released compress inode  f2fs image may be corrupted after below testcase: - mkfs.f2fs -O extra_attr,compression -f /dev/vdb - mount /dev/vdb /mnt/f2fs - touch /mnt/f2fs/file - f2fs_io setflags compression /mnt/f2fs/file - dd if=/dev/zero of=/mnt/f2fs/file bs=4k count=4 - f2fs_io release_cblocks /mnt/f2fs/file - truncate -s 8192 /mnt/f2fs/file - umount /mnt/f2fs - fsck.f2fs /dev/vdb  [ASSERT] (fsck_chk_inode_blk:1256)  --\u003E ino: 0x5 has i_blocks: 0x00000002, but has 0x3 blocks [FSCK] valid_block_count matching with CP             [Fail] [0x4, 0x5] [FSCK] other corrupted bugs                           [Fail]  The reason is: partial truncation assume compressed inode has reserved blocks, after partial truncation, valid block count may change w/o .i_blocks and .total_valid_block_count update, result in corruption.  This patch only allow cluster size aligned truncation on released compress inode for fixing.",
  "published": "2024-06-24T14:15:11Z",
  "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": 0.00226,
  "epssPercentile": 0.13339,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.94-1",
      "fix": "DEBIAN-CVE-2024-33847",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-33847",
      "released": "2024-06-24T14:15:11Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.9.7-1",
      "fix": "DEBIAN-CVE-2024-33847",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-33847",
      "released": "2024-06-24T14:15:11Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.9.7-1",
      "fix": "DEBIAN-CVE-2024-33847",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2024-33847",
      "released": "2024-06-24T14:15:11Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}