CVE-2026-80963
Full vulnerability record from the local CVENow database.
Description
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.
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-09-11 20:19:02.220000
Last modified
2026-10-19 09:17:27.887000
View original CVE JSON
{
"id": "CVE-2026-80963",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-09-11T20:19:02.220",
"lastModified": "2026-10-19T09:17:27.887",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-stats: fix a crash if allocation of per-cpu data fails\n\nIf \"dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))\" fails, the code\njumps to the \"out\" label and calls dm_stat_free. dm_stat_free does\n\"for_each_possible_cpu(cpu) { dm_kvfree(s->stat_percpu[cpu][0].histogram,\ns->histogram_alloc_size);\", which crashes with NULL pointer dereference\nif s->stat_percpu[cpu] is NULL.\n\nThis commit fixes the bug by testing s->stat_percpu[cpu] for NULL before\nusing it."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/md/dm-stats.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
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"defaultStatus": "affected",
"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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{
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{
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{
"version": "6.1.188",
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},
{
"version": "6.6.157",
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"status": "unaffected"
},
{
"version": "6.12.109",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
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},
{
"version": "6.18.50",
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},
{
"version": "7.2.4",
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},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/0c8f7870ed3ebd512f090d7714cc2c556b9e5c75",
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}