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dm-stats: fix a crash if allocation of per-cpu data fails

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

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
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