{"id":"CVE-2026-31661","state":"PUBLISHED","title":"wifi: brcmsmac: Fix dma_free_coherent() size","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmsmac: Fix dma_free_coherent() size\n\ndma_alloc_consistent() may change the size to align it. The new size is\nsaved in alloced.\n\nChange the free size to match the allocation size.","publishedAt":"2026-04-24T14:45:11.917Z","updatedAt":"2026-05-11T22:13:08.559Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"f449676bab54fea1440775c8c915dadb323fe015","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"3c204a0fd079fa7a867151a47d830ad1c2db5177","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"0f87777b74bcce29b966ec42d9aa8f9edd9b1667","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"4bf41c2731a0549e21f66180ff780b1e036639ab","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"77263f053963dea9f3962505ac0c768853d7dc59","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"b27fa888e4a426a3bcf6f6ab24701d888d9bf5aa","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"01f1330d3d1bee07e0c42d40cc48b7be8b6dad84","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"12cd7632757a54ce586e36040210b1a738a0fc53","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.2","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.169","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.135","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.82","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.23","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.13","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c"]}],"references":["https://git.kernel.org/stable/c/f449676bab54fea1440775c8c915dadb323fe015","https://git.kernel.org/stable/c/3c204a0fd079fa7a867151a47d830ad1c2db5177","https://git.kernel.org/stable/c/0f87777b74bcce29b966ec42d9aa8f9edd9b1667","https://git.kernel.org/stable/c/4bf41c2731a0549e21f66180ff780b1e036639ab","https://git.kernel.org/stable/c/77263f053963dea9f3962505ac0c768853d7dc59","https://git.kernel.org/stable/c/b27fa888e4a426a3bcf6f6ab24701d888d9bf5aa","https://git.kernel.org/stable/c/01f1330d3d1bee07e0c42d40cc48b7be8b6dad84","https://git.kernel.org/stable/c/12cd7632757a54ce586e36040210b1a738a0fc53"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31661.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31661","state":"PUBLISHED","datePublished":"2026-04-24T14:45:11.917Z","dateUpdated":"2026-05-11T22:13:08.559Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-09T15:48:24.129Z"},"containers":{"cna":{"title":"wifi: brcmsmac: Fix dma_free_coherent() size","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmsmac: Fix dma_free_coherent() size\n\ndma_alloc_consistent() may change the size to align it. The new size is\nsaved in alloced.\n\nChange the free size to match the allocation size."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"f449676bab54fea1440775c8c915dadb323fe015","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"3c204a0fd079fa7a867151a47d830ad1c2db5177","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"0f87777b74bcce29b966ec42d9aa8f9edd9b1667","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"4bf41c2731a0549e21f66180ff780b1e036639ab","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"77263f053963dea9f3962505ac0c768853d7dc59","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"b27fa888e4a426a3bcf6f6ab24701d888d9bf5aa","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"01f1330d3d1bee07e0c42d40cc48b7be8b6dad84","versionType":"git"},{"version":"5b435de0d786869c95d1962121af0d7df2542009","status":"affected","lessThan":"12cd7632757a54ce586e36040210b1a738a0fc53","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.2","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.169","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.135","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.82","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.23","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.13","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f449676bab54fea1440775c8c915dadb323fe015"},{"url":"https://git.kernel.org/stable/c/3c204a0fd079fa7a867151a47d830ad1c2db5177"},{"url":"https://git.kernel.org/stable/c/0f87777b74bcce29b966ec42d9aa8f9edd9b1667"},{"url":"https://git.kernel.org/stable/c/4bf41c2731a0549e21f66180ff780b1e036639ab"},{"url":"https://git.kernel.org/stable/c/77263f053963dea9f3962505ac0c768853d7dc59"},{"url":"https://git.kernel.org/stable/c/b27fa888e4a426a3bcf6f6ab24701d888d9bf5aa"},{"url":"https://git.kernel.org/stable/c/01f1330d3d1bee07e0c42d40cc48b7be8b6dad84"},{"url":"https://git.kernel.org/stable/c/12cd7632757a54ce586e36040210b1a738a0fc53"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:13:08.559Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.1.169"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.6.135"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.12.82"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.18.23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.19.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}