dm-stats: fix a crash if allocation of per-cpu data fails (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 7 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
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.
References
- 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
European references
- ENISA EUVD · EUVD-2026-76286
- GCVE · GCVE-0-2026-80963
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < e45f0b0c41139810ff395ba2f3cfca1460a5b8a6 ; affected fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 9805d87d0e26c68ee69da3928e665214d2e2851a ; affected fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 564d17573ef643c13cf6e9015124a205fa65e704 ; affected fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 389a50d094e13724f5f45e6d9d6ef734c98ba291 ; affected fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < c3f211b7a277dd404b4e7d23095be964b5b46a27 ; affected fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 74210fa072960a18bb0eead487585452af722e4f |
| Linux · Linux | affected 3.12 ; unaffected 0 < 3.12 ; unaffected 5.10.270 ≤ 5.10.* ; unaffected 5.15.221 ≤ 5.15.* ; unaffected 6.1.188 ≤ 6.1.* ; unaffected 6.6.157 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |