CVE-2026-80963
dm-stats: fix a crash if allocation of per-cpu data fails
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.
INFO
Published Date :
Sept. 11, 2026, 8:19 p.m.
Last Modified :
Sept. 14, 2026, 1:18 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel to the patched version.
- Apply the specific commit that addresses the NULL pointer dereference.
- Test the system for stability after the update.
References to Advisories, Solutions, and Tools
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CVE-2026-80963.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-80963 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
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stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-80963
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-80963 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-80963 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 14, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/80xxx/CVE-2026-80963.json">CVE-2026-80963</a> Added Reference https://git.kernel.org/stable/c/389a50d094e13724f5f45e6d9d6ef734c98ba291 Added Reference https://git.kernel.org/stable/c/564d17573ef643c13cf6e9015124a205fa65e704 Added Reference https://git.kernel.org/stable/c/9805d87d0e26c68ee69da3928e665214d2e2851a Added Reference https://git.kernel.org/stable/c/e45f0b0c41139810ff395ba2f3cfca1460a5b8a6 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 11, 2026
Action Type Old Value New Value Added 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/80xxx/CVE-2026-80963.json">CVE-2026-80963</a> Added Reference https://git.kernel.org/stable/c/0c8f7870ed3ebd512f090d7714cc2c556b9e5c75 Added Reference https://git.kernel.org/stable/c/74210fa072960a18bb0eead487585452af722e4f Added Reference https://git.kernel.org/stable/c/c3f211b7a277dd404b4e7d23095be964b5b46a27 Added Reference https://git.kernel.org/stable/c/cc87e26d9cce22061dc21e51e11afef29dbbc36a