erofs: fix use-after-free on sbi->sync_decompress
In the Linux kernel, the following vulnerability has been resolved: erofs: fix use-after-free on sbi->sync_decompress z_erofs_decompress_kickoff() can race with filesystem unmount, causing a use-after-free on sbi->sync_decompress. When I/O completes, z_erofs_endio() calls z_erofs_decompress_kickoff() to queue z_erofs_decompressqueue_work() asynchronously. Then, after all folios are unlocked, unmount workflow can proceed and sbi will be freed before accessing to sbi->sync_decompress. Thread (unmount) I/O completion kworker queue_work z_erofs_decompressqueue_work (all folios are unlocked) cleanup_mnt .. erofs_kill_sb erofs_sb_free kfree(sbi) access sbi->sync_decompress // UAF!!
CVE-2026-53272
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-2026-53272
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": "40452ffca3c1a0f2994e826f9fa213b107f1a2d4",
"lessThan": "59db5d8bcc65e04d8598afd81ec3a18edb407470",
"versionType": "git"
},
{
"status": "affected",
"version": "40452ffca3c1a0f2994e826f9fa213b107f1a2d4",
"lessThan": "86ab00cf81d44b675bb23db62b88fd76c8ac8cea",
"versionType": "git"
},
{
"status": "affected",
"version": "40452ffca3c1a0f2994e826f9fa213b107f1a2d4",
"lessThan": "00bf6868df65fa95b3854996246d15759fdc7070",
"versionType": "git"
},
{
"status": "affected",
"version": "40452ffca3c1a0f2994e826f9fa213b107f1a2d4",
"lessThan": "95caf60da33d87ed26c28993620f0d92487b0296",
"versionType": "git"
},
{
"status": "affected",
"version": "40452ffca3c1a0f2994e826f9fa213b107f1a2d4",
"lessThan": "1aee05e814d292064bf5fa15733741040cdc48ba",
"versionType": "git"
}
],
"programFiles": [
"fs/erofs/zdata.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.94",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.36",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.13",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/erofs/zdata.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53272
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46383 · Revision 1
- Added to Heist Feed
- Publisher date