{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38512", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.022Z", "datePublished": "2025-08-16T10:54:54.285Z", "dateUpdated": "2026-05-23T15:59:56.088Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:59:56.088Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: prevent A-MSDU attacks in mesh networks\n\nThis patch is a mitigation to prevent the A-MSDU spoofing vulnerability\nfor mesh networks. The initial update to the IEEE 802.11 standard, in\nresponse to the FragAttacks, missed this case (CVE-2025-27558). It can\nbe considered a variant of CVE-2020-24588 but for mesh networks.\n\nThis patch tries to detect if a standard MSDU was turned into an A-MSDU\nby an adversary. This is done by parsing a received A-MSDU as a standard\nMSDU, calculating the length of the Mesh Control header, and seeing if\nthe 6 bytes after this header equal the start of an rfc1042 header. If\nequal, this is a strong indication of an ongoing attack attempt.\n\nThis defense was tested with mac80211_hwsim against a mesh network that\nuses an empty Mesh Address Extension field, i.e., when four addresses\nare used, and when using a 12-byte Mesh Address Extension field, i.e.,\nwhen six addresses are used. Functionality of normal MSDUs and A-MSDUs\nwas also tested, and confirmed working, when using both an empty and\n12-byte Mesh Address Extension field.\n\nIt was also tested with mac80211_hwsim that A-MSDU attacks in non-mesh\nnetworks keep being detected and prevented.\n\nNote that the vulnerability being patched, and the defense being\nimplemented, was also discussed in the following paper and in the\nfollowing IEEE 802.11 presentation:\n\nhttps://papers.mathyvanhoef.com/wisec2025.pdf\nhttps://mentor.ieee.org/802.11/dcn/25/11-25-0949-00-000m-a-msdu-mesh-spoof-protection.docx" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/wireless/util.c" ], "versions": [ { "version": "79720743421753ff72bfa0d79976c534645b81c1", "lessThan": "e2c8a3c0388aef6bfc4aabfba07bc7dff16eea80", "status": "affected", "versionType": "git" }, { "version": "986e43b19ae9176093da35e0a844e65c8bf9ede7", "lessThan": "ec6392061de6681148b63ee6c8744da833498cdd", "status": "affected", "versionType": "git" }, { "version": "986e43b19ae9176093da35e0a844e65c8bf9ede7", "lessThan": "e01851f6e9a665a6011b14714b271d3e6b0b8d32", "status": "affected", "versionType": "git" }, { "version": "986e43b19ae9176093da35e0a844e65c8bf9ede7", "lessThan": "6e3b09402cc6c3e3474fa548e8adf6897dda05de", "status": "affected", "versionType": "git" }, { "version": "986e43b19ae9176093da35e0a844e65c8bf9ede7", "lessThan": "737bb912ebbe4571195c56eba557c4d7315b26fb", "status": "affected", "versionType": "git" }, { "version": "6.1.107", "lessThan": "6.1.146", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/wireless/util.c" ], "versions": [ { "version": "6.3", "status": "affected" }, { "version": "0", "lessThan": "6.3", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.146", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.99", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.39", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.7", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16", "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": "6.1.107", "versionEndExcluding": "6.1.146" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.6.99" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.12.39" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.15.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.3", "versionEndExcluding": "6.16" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/e2c8a3c0388aef6bfc4aabfba07bc7dff16eea80" }, { "url": "https://git.kernel.org/stable/c/ec6392061de6681148b63ee6c8744da833498cdd" }, { "url": "https://git.kernel.org/stable/c/e01851f6e9a665a6011b14714b271d3e6b0b8d32" }, { "url": "https://git.kernel.org/stable/c/6e3b09402cc6c3e3474fa548e8adf6897dda05de" }, { "url": "https://git.kernel.org/stable/c/737bb912ebbe4571195c56eba557c4d7315b26fb" } ], "title": "wifi: prevent A-MSDU attacks in mesh networks", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:39:14.400Z" } } ] } }