{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31661", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.129Z", "datePublished": "2026-04-24T14:45:11.917Z", "dateUpdated": "2026-04-24T14:45:11.917Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-04-24T14:45:11.917Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c"], "versions": [{"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "f449676bab54fea1440775c8c915dadb323fe015", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "3c204a0fd079fa7a867151a47d830ad1c2db5177", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "0f87777b74bcce29b966ec42d9aa8f9edd9b1667", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "4bf41c2731a0549e21f66180ff780b1e036639ab", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "77263f053963dea9f3962505ac0c768853d7dc59", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "b27fa888e4a426a3bcf6f6ab24701d888d9bf5aa", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "01f1330d3d1bee07e0c42d40cc48b7be8b6dad84", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "12cd7632757a54ce586e36040210b1a738a0fc53", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/broadcom/brcm80211/brcmsmac/dma.c"], "versions": [{"version": "3.2", "status": "affected"}, {"version": "0", "lessThan": "3.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.253", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.169", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.135", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.82", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.23", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.13", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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"}]}]}], "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"}], "title": "wifi: brcmsmac: Fix dma_free_coherent() size", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-31661", "lastModified": "2026-04-24T17:51:40.810", "metrics": {}, "published": "2026-04-24T15:16:45.703", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/01f1330d3d1bee07e0c42d40cc48b7be8b6dad84"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0f87777b74bcce29b966ec42d9aa8f9edd9b1667"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/12cd7632757a54ce586e36040210b1a738a0fc53"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3c204a0fd079fa7a867151a47d830ad1c2db5177"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4bf41c2731a0549e21f66180ff780b1e036639ab"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/77263f053963dea9f3962505ac0c768853d7dc59"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b27fa888e4a426a3bcf6f6ab24701d888d9bf5aa"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f449676bab54fea1440775c8c915dadb323fe015"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: wifi: brcmsmac: Fix dma_free_coherent() size", "id": "2461488", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461488"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-763", "details": ["A flaw was found in the Linux kernel's brcmsmac Wi-Fi driver. This vulnerability arises from an incorrect size used during memory deallocation (dma_free_coherent) that does not match the size allocated (dma_alloc_consistent), which may be adjusted for alignment. An attacker could potentially exploit this memory mismatch, leading to memory corruption. This could result in a denial of service or other unpredictable system behavior."], "name": "CVE-2026-31661", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31661\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31661\nhttps://lore.kernel.org/linux-cve-announce/2026042404-CVE-2026-31661-16ae@gregkh/T"], "threat_severity": "Moderate"}

{}