CVE-2024-33847f2fs: compress: don't allow unaligned truncation on released compress inode
Updated under an hour ago ()
Does this affect you?
It affects Linux and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: f2fs: compress: don't 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) --> 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.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
Linux Linux linux:linux (from the name) | from 8e1651cd667cd6779db28314844d88b6de8312a3 before b8962cf98595d1ec62f40f23667de830567ec8bc; from c61404153eb683da9c35aad133131554861ed561 before 8acae047215024d1ac499b3c8337ef1b952f160b; from c61404153eb683da9c35aad133131554861ed561 before 3ccf5210dc941a7aa0180596ac021568be4d35ec; from c61404153eb683da9c35aad133131554861ed561 before 9f9341064a9b5246a32a7fe56b9f80c6f7f3c62d; from c61404153eb683da9c35aad133131554861ed561 before 5268241b41b1c5d0acca75e9b97d4fd719251c8c; from c61404153eb683da9c35aad133131554861ed561 before 29ed2b5dd521ce7c5d8466cd70bf0cc9d07afeee | CNA record |
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name) | before V1.1.1 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.14 before 5.15.161; from 5.16 before 6.1.93; from 6.2 before 6.6.33; from 6.7 before 6.9.4 | NVD |
References
- https://git.kernel.org/stable/c/b8962cf98595d1ec62f40f23667de830567ec8bcpatch
- https://git.kernel.org/stable/c/8acae047215024d1ac499b3c8337ef1b952f160bpatch
- https://git.kernel.org/stable/c/3ccf5210dc941a7aa0180596ac021568be4d35ecpatch
- https://git.kernel.org/stable/c/9f9341064a9b5246a32a7fe56b9f80c6f7f3c62dpatch
- https://git.kernel.org/stable/c/5268241b41b1c5d0acca75e9b97d4fd719251c8cpatch
- https://git.kernel.org/stable/c/29ed2b5dd521ce7c5d8466cd70bf0cc9d07afeeepatch
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.