dm: fix race when loading and unloading a table
In the Linux kernel, the following vulnerability has been resolved: dm: fix race when loading and unloading a table If the userspace calls two concurrent table load ioctls and one of them succeeds and the other fails, there is a race condition because dm_setup_md_queue walks &md->table_devices without any lock. If the walk races with dm_table_destroy -> free_devices -> dm_put_table_device, there is access to invalid memory. Fix this race by extending the lock over the list walk.
CVE-2026-89998
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-2026-89998
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": "773bfda35c9511734d7f898e2ee73cd60d2a3f38",
"lessThan": "b02e35b81176c7d61dd441cc7a2e5c324a82444b",
"versionType": "git"
},
{
"status": "affected",
"version": "1a581b72169968f4154b5793828f3bc28b258b35",
"lessThan": "0ea6e5ad4a5817e91f11b4cc1e022e575ed2e7ca",
"versionType": "git"
},
{
"status": "affected",
"version": "1a581b72169968f4154b5793828f3bc28b258b35",
"lessThan": "a1af1884c960b98c621b6fe2fea1216b78c02152",
"versionType": "git"
},
{
"status": "affected",
"version": "1a581b72169968f4154b5793828f3bc28b258b35",
"lessThan": "af1f32ccf8051f4691ced11feb452b9d13561727",
"versionType": "git"
},
{
"status": "affected",
"version": "1a581b72169968f4154b5793828f3bc28b258b35",
"lessThan": "00ad6f9ed27f91925d4d3fb7aab50a60d774f998",
"versionType": "git"
},
{
"status": "affected",
"version": "1a581b72169968f4154b5793828f3bc28b258b35",
"lessThan": "5380c7f6335cc6d77eb77d065105e81155c4d9d3",
"versionType": "git"
},
{
"status": "affected",
"version": "600593707c239bb99486925d65540a5020bc1e58",
"versionType": "git"
},
{
"status": "affected",
"version": "6.1.2",
"lessThan": "6.1.188",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.0.16",
"lessThan": "6.1",
"versionType": "semver"
}
],
"programFiles": [
"drivers/md/dm.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.2",
"versionType": "semver"
},
{
"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": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/md/dm.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89998
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #36433 · Revision 1
- Added to Heist Feed
- Publisher date