Answer in brief
CVE-2024-33847 records a High severity (CVSS 7.1) vulnerability in f2fs: compress: don't allow unaligned truncation on released compress inode. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=8e1651cd667cd6779db28314844d88b6de8312a3 <b8962cf98595d1ec62f40f23667de830567ec8bc || >=c61404153eb683da9c35aad133131554861ed561 <8acae047215024d1ac499b3c8337ef1b952f160b || >=c61404153eb683da9c35aad133131554861ed561 <3ccf5210dc941a7aa0180596ac021568be4d35ec || >=c61404153eb683da9c35aad133131554861ed561 <9f9341064a9b5246a32a7fe56b9f80c6f7f3c62d || >=c61404153eb683da9c35aad133131554861ed561 <5268241b41b1c5d0acca75e9b97d4fd719251c8c || >=c61404153eb683da9c35aad133131554861ed561 <29ed2b5dd521ce7c5d8466cd70bf0cc9d07afeee | b8962cf98595d1ec62f40f23667de830567ec8bc, 8acae047215024d1ac499b3c8337ef1b952f160b, 3ccf5210dc941a7aa0180596ac021568be4d35ec, 9f9341064a9b5246a32a7fe56b9f80c6f7f3c62d, 5268241b41b1c5d0acca75e9b97d4fd719251c8c, 29ed2b5dd521ce7c5d8466cd70bf0cc9d07afeee |
| Linux/Linuxgeneric | 5.14 | Not reported |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
| Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric | >=0 <V1.1.1 | V1.1.1 |
Published upstream
Jun 24, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.