Medium 5.5Published Apr 24, 2026

CVE-2026-31661wifi: brcmsmac: Fix dma_free_coherent() size

Updated under an hour ago (Oct 28, 2026, 11:50 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmsmac: Fix dma_free_coherent() size dma_alloc_consistent() may change the size to align it. The new size is saved in alloced. Change the free size to match the allocation size.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 5b435de0d786869c95d1962121af0d7df2542009 before f449676bab54fea1440775c8c915dadb323fe015; 5b435de0d786869c95d1962121af0d7df2542009 builds before 3c204a0fd079fa7a867151a47d830ad1c2db5177; 5b435de0d786869c95d1962121af0d7df2542009 builds before 0f87777b74bcce29b966ec42d9aa8f9edd9b1667; 5b435de0d786869c95d1962121af0d7df2542009 builds before 4bf41c2731a0549e21f66180ff780b1e036639ab; from 5b435de0d786869c95d1962121af0d7df2542009 before 77263f053963dea9f3962505ac0c768853d7dc59; from 5b435de0d786869c95d1962121af0d7df2542009 before b27fa888e4a426a3bcf6f6ab24701d888d9bf5aa; 5b435de0d786869c95d1962121af0d7df2542009 builds before 01f1330d3d1bee07e0c42d40cc48b7be8b6dad84; from 5b435de0d786869c95d1962121af0d7df2542009 before 12cd7632757a54ce586e36040210b1a738a0fc53	CNA record
linux linux_kernel linux:linux_kernel	from 3.2.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.169; from 6.2 before 6.6.135; from 6.7 before 6.12.82; from 6.13 before 6.18.23; from 6.19 before 6.19.13; 3.2; and 7 more ranges	NVD

References

References

https://git.kernel.org/stable/c/f449676bab54fea1440775c8c915dadb323fe015	patch
https://git.kernel.org/stable/c/3c204a0fd079fa7a867151a47d830ad1c2db5177	patch
https://git.kernel.org/stable/c/0f87777b74bcce29b966ec42d9aa8f9edd9b1667	patch
https://git.kernel.org/stable/c/4bf41c2731a0549e21f66180ff780b1e036639ab	patch
https://git.kernel.org/stable/c/77263f053963dea9f3962505ac0c768853d7dc59	patch
https://git.kernel.org/stable/c/b27fa888e4a426a3bcf6f6ab24701d888d9bf5aa	patch
https://git.kernel.org/stable/c/01f1330d3d1bee07e0c42d40cc48b7be8b6dad84	patch
https://git.kernel.org/stable/c/12cd7632757a54ce586e36040210b1a738a0fc53	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.