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CVE-2026-90372

wifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss If a peer's VHT/HE MCS map has no supported spatial stream (all fields 0x3), the loop exits with nss == 0 and the function returned (u8)-1 (255), which was then written into the firmware sta_rec_bf beamforming fields. Clamp the result to 0.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 89029a85482cbcf68026a89fc974e8f6898d6b37 · fixed in 2801477c36a19be4f549fe60e54995f03b0ea7b9; From 89029a85482cbcf68026a89fc974e8f6898d6b37 · fixed in 38f4d6323bcd65e41a691432eddabd2b03acdeee; From 89029a85482cbcf68026a89fc974e8f6898d6b37 · fixed in 25f753f7f620955a8a51e63e445d8b9076c51396; From 89029a85482cbcf68026a89fc974e8f6898d6b37 · fixed in e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6; From 89029a85482cbcf68026a89fc974e8f6898d6b37 · fixed in 85bd46ab7674b6d357f9a14791352c65fb09eee9; From 89029a85482cbcf68026a89fc974e8f6898d6b37 · fixed in 6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7; From 89029a85482cbcf68026a89fc974e8f6898d6b37 · fixed in ecfd1a07e78c31d81322fb2d81dc468081cc3004; From 89029a85482cbcf68026a89fc974e8f6898d6b37 · fixed in 4a2f4be532e3ea4e2b536e411793a05aaa51af25

  • Linux Linux

    5.8

  • KernelLinux

    From 5.8.0 · fixed in 5.10.270; From 5.11.0 · fixed in 5.15.221; From 5.16.0 · fixed in 6.1.188; 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 8

git.kernel.org