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CVE-2026-90372

wifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss

HIGH
7.1
CVSS Score
Published: September 17, 2026 at 04:09 PM UTC
Updated: October 19, 2026 at 09:19 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.1
Exploit prediction
EPSS 0.4%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
5.889029a85482cbcf68026a89fc974e8f6898d6b37
Vendor states this is fixed in 25f753f7f620955a8a51e63e445d8b9076c51396 (fixed)
Vendor states this is fixed in 2801477c36a19be4f549fe60e54995f03b0ea7b9 (fixed)
Vendor states this is fixed in 38f4d6323bcd65e41a691432eddabd2b03acdeee (fixed)
Vendor states this is fixed in 4a2f4be532e3ea4e2b536e411793a05aaa51af25 (fixed)
Vendor states this is fixed in 6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7 (fixed)
Vendor states this is fixed in 85bd46ab7674b6d357f9a14791352c65fb09eee9 (fixed)
Vendor states this is fixed in e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6 (fixed)
Vendor states this is fixed in ecfd1a07e78c31d81322fb2d81dc468081cc3004 (fixed)
Vendor states this is fixed in 5.10.270 (unaffected)
Vendor states this is fixed in 5.15.221 (unaffected)
Vendor states this is fixed in 5.8 (unaffected)
Vendor states this is fixed in 6.1.188 (unaffected)
Vendor states this is fixed in 6.12.110 (unaffected)
Vendor states this is fixed in 6.18.52 (unaffected)
Vendor states this is fixed in 6.6.157 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

Source: cverecord
https://git.kernel.org/stable/c/2801477c36a19be4f549fe60e54995f03b0ea7b9
Source: cverecord
https://git.kernel.org/stable/c/38f4d6323bcd65e41a691432eddabd2b03acdeee
Source: cverecord
https://git.kernel.org/stable/c/25f753f7f620955a8a51e63e445d8b9076c51396
Source: cverecord
https://git.kernel.org/stable/c/e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6
Source: cverecord
https://git.kernel.org/stable/c/85bd46ab7674b6d357f9a14791352c65fb09eee9
Source: cverecord
https://git.kernel.org/stable/c/6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7
Source: cverecord
https://git.kernel.org/stable/c/ecfd1a07e78c31d81322fb2d81dc468081cc3004
Source: cverecord
https://git.kernel.org/stable/c/4a2f4be532e3ea4e2b536e411793a05aaa51af25

CVSS

7.1HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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