{"id":"CVE-2026-90372","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss\n\nIf a peer's VHT/HE MCS map has no supported spatial stream (all fields\n0x3), the loop exits with nss …","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss\n\nIf a peer's VHT/HE MCS map has no supported spatial stream (all fields\n0x3), the loop exits with nss …","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 89029a85482cbcf68026a89fc974e8f6898d6b37 < 2801477c36a19be4f549fe60e54995f03b0ea7b9","Linux >= 89029a85482cbcf68026a89fc974e8f6898d6b37 < 38f4d6323bcd65e41a691432eddabd2b03acdeee","Linux >= 89029a85482cbcf68026a89fc974e8f6898d6b37 < 25f753f7f620955a8a51e63e445d8b9076c51396","Linux >= 89029a85482cbcf68026a89fc974e8f6898d6b37 < e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6","Linux >= 89029a85482cbcf68026a89fc974e8f6898d6b37 < 85bd46ab7674b6d357f9a14791352c65fb09eee9","Linux >= 89029a85482cbcf68026a89fc974e8f6898d6b37 < 6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7","Linux >= 89029a85482cbcf68026a89fc974e8f6898d6b37 < ecfd1a07e78c31d81322fb2d81dc468081cc3004","Linux >= 89029a85482cbcf68026a89fc974e8f6898d6b37 < 4a2f4be532e3ea4e2b536e411793a05aaa51af25","Linux 5.8"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:55.750","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90372","references":[{"url":"https://git.kernel.org/stable/c/25f753f7f620955a8a51e63e445d8b9076c51396","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2801477c36a19be4f549fe60e54995f03b0ea7b9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/38f4d6323bcd65e41a691432eddabd2b03acdeee","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4a2f4be532e3ea4e2b536e411793a05aaa51af25","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/85bd46ab7674b6d357f9a14791352c65fb09eee9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ecfd1a07e78c31d81322fb2d81dc468081cc3004","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00356,"epssPercentile":0.29369,"ingestedAt":"2026-09-17T16:21:47.808Z","slug":"CVE-2026-90372","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss\n\nIf a peer's VHT/HE MCS map has no supported spatial stream (all fields\n0x3), the loop exits with nss == 0 and the function returned (u8)-1 (255),\nwhich was then written into the firmware sta_rec_bf beamforming fields.\nClamp the result to 0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":207281,"id":"CVE-2026-90372","ts":1789757340377,"field":"cvss","old":null,"new":"7.1"},{"seq":207280,"id":"CVE-2026-90372","ts":1789757340377,"field":"severity","old":"none","new":"high"}]}