{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90366","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.807Z","datePublished":"2026-09-17T16:09:08.785Z","dateUpdated":"2026-09-17T16:09:08.785Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:09:08.785Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV\n\nWhen a CSA countdown is active, mt7996_mcu_beacon_cntdwn() emits two\nbss_bcn_cntdwn_tlv entries (the CSA countdown and the CCA-abort BCC), but\nMT7996_BEACON_UPDATE_SIZE only reserved one. With MBSSID enabled and a\nnear-maximum beacon template the extra 8 bytes could push the offload\ncommand past MT7996_MAX_BSS_OFFLOAD_SIZE and trigger skb_over_panic().\nReserve room for both countdown TLVs."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7996/mcu.h"],"versions":[{"version":"98686cd21624c75a043e96812beadddf4f6f48e5","lessThan":"1d348f96623ec20d700af7d4dfc00a74da6238ac","status":"affected","versionType":"git"},{"version":"98686cd21624c75a043e96812beadddf4f6f48e5","lessThan":"bc1d694a1ffe0062c3adf0db1d64ad54454398ec","status":"affected","versionType":"git"},{"version":"98686cd21624c75a043e96812beadddf4f6f48e5","lessThan":"45d8896e4cffffb2c6554ccbec6efe7a0d53166f","status":"affected","versionType":"git"},{"version":"98686cd21624c75a043e96812beadddf4f6f48e5","lessThan":"1a51aff0e048dc5b8252d65808b79939c942d6ec","status":"affected","versionType":"git"},{"version":"98686cd21624c75a043e96812beadddf4f6f48e5","lessThan":"50c66bab321140c49aa2ed779a3ec9d2f085b458","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/mediatek/mt76/mt7996/mcu.h"],"versions":[{"version":"6.2","status":"affected"},{"version":"0","lessThan":"6.2","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"6.2","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/1d348f96623ec20d700af7d4dfc00a74da6238ac"},{"url":"https://git.kernel.org/stable/c/bc1d694a1ffe0062c3adf0db1d64ad54454398ec"},{"url":"https://git.kernel.org/stable/c/45d8896e4cffffb2c6554ccbec6efe7a0d53166f"},{"url":"https://git.kernel.org/stable/c/1a51aff0e048dc5b8252d65808b79939c942d6ec"},{"url":"https://git.kernel.org/stable/c/50c66bab321140c49aa2ed779a3ec9d2f085b458"}],"title":"wifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV","x_generator":{"engine":"bippy-1.2.0"}}}}