Linux Kernel brcmsmac DMA Size Misalign Bug
CVE-2026-31661 Published on April 24, 2026
wifi: brcmsmac: Fix dma_free_coherent() size
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.
Products Associated with CVE-2026-31661
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Affected Versions
Linux:- Version 5b435de0d786869c95d1962121af0d7df2542009 and below f449676bab54fea1440775c8c915dadb323fe015 is affected.
- Version 5b435de0d786869c95d1962121af0d7df2542009 and below 3c204a0fd079fa7a867151a47d830ad1c2db5177 is affected.
- Version 5b435de0d786869c95d1962121af0d7df2542009 and below 0f87777b74bcce29b966ec42d9aa8f9edd9b1667 is affected.
- Version 5b435de0d786869c95d1962121af0d7df2542009 and below 4bf41c2731a0549e21f66180ff780b1e036639ab is affected.
- Version 5b435de0d786869c95d1962121af0d7df2542009 and below 77263f053963dea9f3962505ac0c768853d7dc59 is affected.
- Version 5b435de0d786869c95d1962121af0d7df2542009 and below b27fa888e4a426a3bcf6f6ab24701d888d9bf5aa is affected.
- Version 5b435de0d786869c95d1962121af0d7df2542009 and below 01f1330d3d1bee07e0c42d40cc48b7be8b6dad84 is affected.
- Version 5b435de0d786869c95d1962121af0d7df2542009 and below 12cd7632757a54ce586e36040210b1a738a0fc53 is affected.
- Version 3.2 is affected.
- Before 3.2 is unaffected.
- Version 5.10.253, <= 5.10.* is unaffected.
- Version 5.15.203, <= 5.15.* is unaffected.
- Version 6.1.169, <= 6.1.* is unaffected.
- Version 6.6.135, <= 6.6.* is unaffected.
- Version 6.12.82, <= 6.12.* is unaffected.
- Version 6.18.23, <= 6.18.* is unaffected.
- Version 6.19.13, <= 6.19.* is unaffected.
- Version 7.0, <= * is unaffected.