fat: release buffer head after rebuilding parent
In the Linux kernel, the following vulnerability has been resolved: fat: release buffer head after rebuilding parent fat_scan_logstart() leaves the matching directory entry's buffer head in sinfo.bh for the caller to release, just like fat_scan(). fat_rebuild_parent() uses the directory entry to rebuild the parent inode for the nostale_ro NFS export path, but does not release sinfo.bh after a successful scan. Release it once fat_build_inode() has consumed the directory entry data.
CVE-2026-90318
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-2026-90318
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": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
"lessThan": "5e44b6944e11fd6647f028219ad0be4e85e9acee",
"versionType": "git"
},
{
"status": "affected",
"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
"lessThan": "d2a86329152c69a6200c15b2bf618755f8563826",
"versionType": "git"
},
{
"status": "affected",
"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
"lessThan": "0f18d712ba9c980e05b7e33a27cde4fe3ed2d393",
"versionType": "git"
},
{
"status": "affected",
"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
"lessThan": "e38587d98d1ceac608420052c0cdd901d25878f3",
"versionType": "git"
},
{
"status": "affected",
"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
"lessThan": "c6a67aa438179cad40f8ae45469e304338d65c0a",
"versionType": "git"
},
{
"status": "affected",
"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
"lessThan": "571ea4263d69df1b48578e4314a828ecd0604755",
"versionType": "git"
},
{
"status": "affected",
"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
"lessThan": "7565e44507634514e3e1899d3acad3de43f7a2c1",
"versionType": "git"
},
{
"status": "affected",
"version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
"lessThan": "83e98dbf19ab64e8528e101e20f8d50e1aaa68a8",
"versionType": "git"
}
],
"programFiles": [
"fs/fat/nfs.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/fat/nfs.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90318
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36669 · Revision 1
- Added to Heist Feed
- Publisher date