CVE-2026-90366 (GCVE-0-2026-90366)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-10-19 09:02
VLAI
Title
wifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV When a CSA countdown is active, mt7996_mcu_beacon_cntdwn() emits two bss_bcn_cntdwn_tlv entries (the CSA countdown and the CCA-abort BCC), but MT7996_BEACON_UPDATE_SIZE only reserved one. With MBSSID enabled and a near-maximum beacon template the extra 8 bytes could push the offload command past MT7996_MAX_BSS_OFFLOAD_SIZE and trigger skb_over_panic(). Reserve room for both countdown TLVs.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6846 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 1d348f96623ec20d700af7d4dfc00a74da6238ac (git)
Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < bc1d694a1ffe0062c3adf0db1d64ad54454398ec (git)
Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 45d8896e4cffffb2c6554ccbec6efe7a0d53166f (git)
Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 1a51aff0e048dc5b8252d65808b79939c942d6ec (git)
Affected: 98686cd21624c75a043e96812beadddf4f6f48e5 , < 50c66bab321140c49aa2ed779a3ec9d2f085b458 (git)
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Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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{
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          "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."
        }
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    "dateReserved": "2026-09-11T19:38:34.807Z",
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      "title": "wifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV",
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}



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