CVE-2026-80963
dm-stats: fix a crash if allocation of per-cpu data fails
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
| Last Updated | Sep 14, 2026 |
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Affected Versions
Linux / Linux
fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < e45f0b0c41139810ff395ba2f3cfca1460a5b8a6 fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 9805d87d0e26c68ee69da3928e665214d2e2851a fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 564d17573ef643c13cf6e9015124a205fa65e704 fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 389a50d094e13724f5f45e6d9d6ef734c98ba291 fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < c3f211b7a277dd404b4e7d23095be964b5b46a27 fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 74210fa072960a18bb0eead487585452af722e4f fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 0c8f7870ed3ebd512f090d7714cc2c556b9e5c75 fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < cc87e26d9cce22061dc21e51e11afef29dbbc36a
Linux / Linux
3.12
References
git.kernel.org: https://git.kernel.org/stable/c/e45f0b0c41139810ff395ba2f3cfca1460a5b8a6 git.kernel.org: https://git.kernel.org/stable/c/9805d87d0e26c68ee69da3928e665214d2e2851a git.kernel.org: https://git.kernel.org/stable/c/564d17573ef643c13cf6e9015124a205fa65e704 git.kernel.org: https://git.kernel.org/stable/c/389a50d094e13724f5f45e6d9d6ef734c98ba291 git.kernel.org: https://git.kernel.org/stable/c/c3f211b7a277dd404b4e7d23095be964b5b46a27 git.kernel.org: https://git.kernel.org/stable/c/74210fa072960a18bb0eead487585452af722e4f git.kernel.org: https://git.kernel.org/stable/c/0c8f7870ed3ebd512f090d7714cc2c556b9e5c75 git.kernel.org: https://git.kernel.org/stable/c/cc87e26d9cce22061dc21e51e11afef29dbbc36a