ext4: avoid potential buffer over-read in parse_apply_sb_mount_options()
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid potential buffer over-read in parse_apply_sb_mount_options() Unlike other strings in the ext4 superblock, we rely on tune2fs to make sure s_mount_opts is NUL terminated. Harden parse_apply_sb_mount_options() by treating s_mount_opts as a potential __nonstring.
CVE-2025-40198
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-2025-40198
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": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
"lessThan": "7bf46ff83a0ef11836e38ebd72cdc5107209342d",
"versionType": "git"
},
{
"status": "affected",
"version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
"lessThan": "b2bac84fde28fb6a88817b8b761abda17a1d300b",
"versionType": "git"
},
{
"status": "affected",
"version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
"lessThan": "e651294218d2684302ee5ed95ccf381646f3e5b4",
"versionType": "git"
},
{
"status": "affected",
"version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
"lessThan": "01829af7656b56d83682b3491265d583d502e502",
"versionType": "git"
},
{
"status": "affected",
"version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
"lessThan": "2a0cf438320cdb783e0378570744c0ef0d83e934",
"versionType": "git"
},
{
"status": "affected",
"version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
"lessThan": "a6e94557cd05adc82fae0400f6e17745563e5412",
"versionType": "git"
},
{
"status": "affected",
"version": "8b67f04ab9de5d8f3a71aef72bf02c995a506db5",
"lessThan": "8ecb790ea8c3fc69e77bace57f14cf0d7c177bd8",
"versionType": "git"
}
],
"programFiles": [
"fs/ext4/super.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.36"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.36",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.4.301",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.246",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "6.1.158",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.114",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.54",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.17.4",
"versionType": "semver",
"lessThanOrEqual": "6.17.*"
},
{
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/ext4/super.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-40198
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30690 · Revision 1
- Added to Heist Feed
- Publisher date