CVE-2026-90372wifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 89029a85482cbcf68026a89fc974e8f6898d6b37 before 2801477c36a19be4f549fe60e54995f03b0ea7b9; 89029a85482cbcf68026a89fc974e8f6898d6b37 builds before 38f4d6323bcd65e41a691432eddabd2b03acdeee; 89029a85482cbcf68026a89fc974e8f6898d6b37 builds before 25f753f7f620955a8a51e63e445d8b9076c51396; from 89029a85482cbcf68026a89fc974e8f6898d6b37 before e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6; 89029a85482cbcf68026a89fc974e8f6898d6b37 builds before 85bd46ab7674b6d357f9a14791352c65fb09eee9; 89029a85482cbcf68026a89fc974e8f6898d6b37 builds before 6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7; from 89029a85482cbcf68026a89fc974e8f6898d6b37 before ecfd1a07e78c31d81322fb2d81dc468081cc3004; 89029a85482cbcf68026a89fc974e8f6898d6b37 builds before 4a2f4be532e3ea4e2b536e411793a05aaa51af25 | CNA record |
References
- https://git.kernel.org/stable/c/2801477c36a19be4f549fe60e54995f03b0ea7b9
- https://git.kernel.org/stable/c/38f4d6323bcd65e41a691432eddabd2b03acdeee
- https://git.kernel.org/stable/c/25f753f7f620955a8a51e63e445d8b9076c51396
- https://git.kernel.org/stable/c/e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6
- https://git.kernel.org/stable/c/85bd46ab7674b6d357f9a14791352c65fb09eee9
- https://git.kernel.org/stable/c/6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7
- https://git.kernel.org/stable/c/ecfd1a07e78c31d81322fb2d81dc468081cc3004
- https://git.kernel.org/stable/c/4a2f4be532e3ea4e2b536e411793a05aaa51af25
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.