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CVE-2026-90366

wifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.6.157, 6.12.110, 6.18.52, 7.2.6
None on Exploit-DB, Metasploit or GitHub

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 98686cd21624c75a043e96812beadddf4f6f48e5 · fixed in 1d348f96623ec20d700af7d4dfc00a74da6238ac; From 98686cd21624c75a043e96812beadddf4f6f48e5 · fixed in bc1d694a1ffe0062c3adf0db1d64ad54454398ec; From 98686cd21624c75a043e96812beadddf4f6f48e5 · fixed in 45d8896e4cffffb2c6554ccbec6efe7a0d53166f; From 98686cd21624c75a043e96812beadddf4f6f48e5 · fixed in 1a51aff0e048dc5b8252d65808b79939c942d6ec; From 98686cd21624c75a043e96812beadddf4f6f48e5 · fixed in 50c66bab321140c49aa2ed779a3ec9d2f085b458

  • Linux Linux

    6.2

  • KernelLinux

    From 6.2.0 · fixed in 6.6.157; From 6.7.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.52; From 6.19.0 · fixed in 7.2.6

References 5

git.kernel.org