{"id":"CVE-2026-90375","state":"PUBLISHED","title":"wifi: mt76: fix non-AQL packet accounting for MLO stations","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: fix non-AQL packet accounting for MLO stations\n\n__mt76_tx_queue_skb() overrides the wcid passed by the driver with\nsta->drv_priv, so the wcid might incorrectly be changed after TX,\ncausing wcid->non_aql_packets to be counted on the wrong wcid. For\nexample, on the AP side, if a station's setup link is the 5G link and\nthe station uses 2G to transmit a frame, the value of non_aql_packets\nis increased on the 5G wcid but decreased on the 2G wcid. Once the\ninflated counter exceeds MT_MAX_NON_AQL_PKT, the TX scheduler\npermanently refuses to service the station.\n\nDrop the reassignment and account on the wcid used for transmission.\nThis also records the actual wcid in the queue entry.","publishedAt":"2026-09-17T16:09:14.730Z","updatedAt":"2026-10-30T12:35:24.917Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"f94842ee088744a9e4b3b3ce4c91e897c4e72aba","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"2c321f86846ead00552bc65f73f5b5f1f81d4023","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"f85f6933cc170155f1c7c2dffdd014965787c71b","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"fc7fae55255ccbde009232e84b102d2782a69ecf","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"186c957ac3325aefb982567ffdd3654b283688a7","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"8ae659743ba936b22ecb4620815887728e2820d6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/tx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","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/mediatek/mt76/tx.c"]}],"references":["https://git.kernel.org/stable/c/f94842ee088744a9e4b3b3ce4c91e897c4e72aba","https://git.kernel.org/stable/c/2c321f86846ead00552bc65f73f5b5f1f81d4023","https://git.kernel.org/stable/c/f85f6933cc170155f1c7c2dffdd014965787c71b","https://git.kernel.org/stable/c/fc7fae55255ccbde009232e84b102d2782a69ecf","https://git.kernel.org/stable/c/186c957ac3325aefb982567ffdd3654b283688a7","https://git.kernel.org/stable/c/8ae659743ba936b22ecb4620815887728e2820d6"],"weaknesses":[],"ingestedAt":"2026-10-30T12:54:04.478Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/90xxx/CVE-2026-90375.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90375","state":"PUBLISHED","datePublished":"2026-09-17T16:09:14.730Z","dateUpdated":"2026-10-30T12:35:24.917Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.808Z"},"containers":{"cna":{"title":"wifi: mt76: fix non-AQL packet accounting for MLO stations","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: fix non-AQL packet accounting for MLO stations\n\n__mt76_tx_queue_skb() overrides the wcid passed by the driver with\nsta->drv_priv, so the wcid might incorrectly be changed after TX,\ncausing wcid->non_aql_packets to be counted on the wrong wcid. For\nexample, on the AP side, if a station's setup link is the 5G link and\nthe station uses 2G to transmit a frame, the value of non_aql_packets\nis increased on the 5G wcid but decreased on the 2G wcid. Once the\ninflated counter exceeds MT_MAX_NON_AQL_PKT, the TX scheduler\npermanently refuses to service the station.\n\nDrop the reassignment and account on the wcid used for transmission.\nThis also records the actual wcid in the queue entry."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"f94842ee088744a9e4b3b3ce4c91e897c4e72aba","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"2c321f86846ead00552bc65f73f5b5f1f81d4023","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"f85f6933cc170155f1c7c2dffdd014965787c71b","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"fc7fae55255ccbde009232e84b102d2782a69ecf","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"186c957ac3325aefb982567ffdd3654b283688a7","versionType":"git"},{"version":"e1378e5228aaa1bf6bb253a379c7de1722a94e00","status":"affected","lessThan":"8ae659743ba936b22ecb4620815887728e2820d6","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/tx.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.6","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","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/mediatek/mt76/tx.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f94842ee088744a9e4b3b3ce4c91e897c4e72aba"},{"url":"https://git.kernel.org/stable/c/2c321f86846ead00552bc65f73f5b5f1f81d4023"},{"url":"https://git.kernel.org/stable/c/f85f6933cc170155f1c7c2dffdd014965787c71b"},{"url":"https://git.kernel.org/stable/c/fc7fae55255ccbde009232e84b102d2782a69ecf"},{"url":"https://git.kernel.org/stable/c/186c957ac3325aefb982567ffdd3654b283688a7"},{"url":"https://git.kernel.org/stable/c/8ae659743ba936b22ecb4620815887728e2820d6"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:35:24.917Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}