dm-stats: fix a crash if allocation of per-cpu data fails
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 7 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, 6.18.50, 7.2.4, 7.3
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-80963
- 2026-10-03 Alias added: GHSA-vfhr-8gq2-gpcv
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-07 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/e45f0b0c41139810ff395ba2f3cfca1460a5b8a6
- https://git.kernel.org/stable/c/9805d87d0e26c68ee69da3928e665214d2e2851a
- https://git.kernel.org/stable/c/564d17573ef643c13cf6e9015124a205fa65e704
- https://git.kernel.org/stable/c/389a50d094e13724f5f45e6d9d6ef734c98ba291
- https://git.kernel.org/stable/c/c3f211b7a277dd404b4e7d23095be964b5b46a27
- https://git.kernel.org/stable/c/74210fa072960a18bb0eead487585452af722e4f
- https://git.kernel.org/stable/c/0c8f7870ed3ebd512f090d7714cc2c556b9e5c75
- https://git.kernel.org/stable/c/cc87e26d9cce22061dc21e51e11afef29dbbc36a
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Sources
- CVE-2026-80963 · CVE Program
- CVE-2026-80963 · NVD
- FIRST EPSS
- GHSA-vfhr-8gq2-gpcv · GitHub Advisory Database · CC BY 4.0
- CVE-2026-80963 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences