f2fs: compress: don't allow unaligned truncation on released compress inode
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.
CVE-2024-33847
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2024-33847
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8e1651cd667cd6779db28314844d88b6de8312a3",
"lessThan": "b8962cf98595d1ec62f40f23667de830567ec8bc",
"versionType": "git"
},
{
"status": "affected",
"version": "c61404153eb683da9c35aad133131554861ed561",
"lessThan": "8acae047215024d1ac499b3c8337ef1b952f160b",
"versionType": "git"
},
{
"status": "affected",
"version": "c61404153eb683da9c35aad133131554861ed561",
"lessThan": "3ccf5210dc941a7aa0180596ac021568be4d35ec",
"versionType": "git"
},
{
"status": "affected",
"version": "c61404153eb683da9c35aad133131554861ed561",
"lessThan": "9f9341064a9b5246a32a7fe56b9f80c6f7f3c62d",
"versionType": "git"
},
{
"status": "affected",
"version": "c61404153eb683da9c35aad133131554861ed561",
"lessThan": "5268241b41b1c5d0acca75e9b97d4fd719251c8c",
"versionType": "git"
},
{
"status": "affected",
"version": "c61404153eb683da9c35aad133131554861ed561",
"lessThan": "29ed2b5dd521ce7c5d8466cd70bf0cc9d07afeee",
"versionType": "git"
}
],
"programFiles": [
"fs/f2fs/file.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.15.161",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.93",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.33",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.9.4",
"versionType": "semver",
"lessThanOrEqual": "6.9.*"
},
{
"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/f2fs/file.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-33847
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #26511 · Revision 1
- Added to Heist Feed
- Publisher date