erofs: avoid infinite loops due to corrupted subpage compact indexes
In the Linux kernel, the following vulnerability has been resolved: erofs: avoid infinite loops due to corrupted subpage compact indexes Robert reported an infinite loop observed by two crafted images. The root cause is that `clusterofs` can be larger than `lclustersize` for !NONHEAD `lclusters` in corrupted subpage compact indexes, e.g.: blocksize = lclustersize = 512 lcn = 6 clusterofs = 515 Move the corresponding check for full compress indexes to `z_erofs_load_lcluster_from_disk()` to also cover subpage compact compress indexes. It also fixes the position of `m->type >= Z_EROFS_LCLUSTER_TYPE_MAX` check, since it should be placed right after `z_erofs_load_{compact,full}_lcluster()`.
CVE-2025-68251
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-2025-68251
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": "3f691aa676f29586e83e6c032713554a290418c3",
"lessThan": "b18a82503a67a530d48f5a5b429e162749fe2c89",
"versionType": "git"
},
{
"status": "affected",
"version": "8d2517aaeea3ab8651bb517bca8f3c8664d318ea",
"lessThan": "dbfac1b85d0753996ddfef636934d431b588dd1f",
"versionType": "git"
},
{
"status": "affected",
"version": "8d2517aaeea3ab8651bb517bca8f3c8664d318ea",
"lessThan": "8675447a8794983f2b7e694b378112772c17635e",
"versionType": "git"
},
{
"status": "affected",
"version": "8d2517aaeea3ab8651bb517bca8f3c8664d318ea",
"lessThan": "e13d315ae077bb7c3c6027cc292401bc0f4ec683",
"versionType": "git"
},
{
"status": "affected",
"version": "22438a34d383ec2789eaf450728e38abc53051f8",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.16",
"lessThan": "6.6.160",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.7.4",
"lessThan": "6.8",
"versionType": "semver"
}
],
"programFiles": [
"fs/erofs/zmap.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.8",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.91",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.17.6",
"versionType": "semver",
"lessThanOrEqual": "6.17.*"
},
{
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/erofs/zmap.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-68251
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46061 · Revision 1
- Added to Heist Feed
- Publisher date