dm-stats: fix a crash if allocation of per-cpu data fails
In the Linux kernel, the following vulnerability has been resolved: dm-stats: fix a crash if allocation of per-cpu data fails If "dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))" fails, the code jumps to the "out" label and calls dm_stat_free. dm_stat_free does "for_each_possible_cpu(cpu) { dm_kvfree(s->stat_percpu[cpu][0].histogram, s->histogram_alloc_size);", which crashes with NULL pointer dereference if s->stat_percpu[cpu] is NULL. This commit fixes the bug by testing s->stat_percpu[cpu] for NULL before using it.
CVE-2026-80963
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-2026-80963
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": "fd2ed4d252701d3bbed4cd3e3d267ad469bb832a",
"lessThan": "e45f0b0c41139810ff395ba2f3cfca1460a5b8a6",
"versionType": "git"
},
{
"status": "affected",
"version": "fd2ed4d252701d3bbed4cd3e3d267ad469bb832a",
"lessThan": "9805d87d0e26c68ee69da3928e665214d2e2851a",
"versionType": "git"
},
{
"status": "affected",
"version": "fd2ed4d252701d3bbed4cd3e3d267ad469bb832a",
"lessThan": "564d17573ef643c13cf6e9015124a205fa65e704",
"versionType": "git"
},
{
"status": "affected",
"version": "fd2ed4d252701d3bbed4cd3e3d267ad469bb832a",
"lessThan": "389a50d094e13724f5f45e6d9d6ef734c98ba291",
"versionType": "git"
},
{
"status": "affected",
"version": "fd2ed4d252701d3bbed4cd3e3d267ad469bb832a",
"lessThan": "c3f211b7a277dd404b4e7d23095be964b5b46a27",
"versionType": "git"
},
{
"status": "affected",
"version": "fd2ed4d252701d3bbed4cd3e3d267ad469bb832a",
"lessThan": "74210fa072960a18bb0eead487585452af722e4f",
"versionType": "git"
},
{
"status": "affected",
"version": "fd2ed4d252701d3bbed4cd3e3d267ad469bb832a",
"lessThan": "0c8f7870ed3ebd512f090d7714cc2c556b9e5c75",
"versionType": "git"
},
{
"status": "affected",
"version": "fd2ed4d252701d3bbed4cd3e3d267ad469bb832a",
"lessThan": "cc87e26d9cce22061dc21e51e11afef29dbbc36a",
"versionType": "git"
}
],
"programFiles": [
"drivers/md/dm-stats.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.12",
"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": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/md/dm-stats.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80963
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34921 · Revision 1
- Added to Heist Feed
- Publisher date