gfs2: Fix slab-use-after-free in qd_put
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix slab-use-after-free in qd_put Commit a475c5dd16e5 ("gfs2: Free quota data objects synchronously") started freeing quota data objects during filesystem shutdown instead of putting them back onto the LRU list, but it failed to remove these objects from the LRU list, causing LRU list corruption. This caused use-after-free when the shrinker (gfs2_qd_shrink_scan) tried to access already-freed objects on the LRU list. Fix this by removing qd objects from the LRU list before freeing them in qd_put(). Initial fix from Deepanshu Kartikey .
CVE-2026-45861
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-2026-45861
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": "a475c5dd16e57c570113eccba51955b5df8bb052",
"lessThan": "53aaf083de197946b25bc4ffa3068d37366ce73d",
"versionType": "git"
},
{
"status": "affected",
"version": "a475c5dd16e57c570113eccba51955b5df8bb052",
"lessThan": "ca7c67bdd293089b3483f18886d6b2d0037d2ad9",
"versionType": "git"
},
{
"status": "affected",
"version": "a475c5dd16e57c570113eccba51955b5df8bb052",
"lessThan": "1d47922b98046b8070a77347fb883a6523792803",
"versionType": "git"
},
{
"status": "affected",
"version": "a475c5dd16e57c570113eccba51955b5df8bb052",
"lessThan": "80fff26d7a0c3926b511661c27eecc811a420eef",
"versionType": "git"
},
{
"status": "affected",
"version": "a475c5dd16e57c570113eccba51955b5df8bb052",
"lessThan": "22150a7d401d9e9169b9b68e05bed95f7f49bf69",
"versionType": "git"
}
],
"programFiles": [
"fs/gfs2/quota.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.14",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.4",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/gfs2/quota.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-45861
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #46306 · Revision 1
- Added to Heist Feed
- Publisher date