{"id":"CVE-2026-90372","summary":"wifi: mt76: mt7915: avoid nss underflow in mt7915_mcu_get_sta_nss","details":"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 == 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.","modified":"2026-09-19T03:47:26.102826051Z","published":"2026-09-17T16:09:12.733Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90372.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/25f753f7f620955a8a51e63e445d8b9076c51396"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2801477c36a19be4f549fe60e54995f03b0ea7b9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/38f4d6323bcd65e41a691432eddabd2b03acdeee"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4a2f4be532e3ea4e2b536e411793a05aaa51af25"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/85bd46ab7674b6d357f9a14791352c65fb09eee9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ecfd1a07e78c31d81322fb2d81dc468081cc3004"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90372.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90372"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"89029a85482cbcf68026a89fc974e8f6898d6b37"},{"fixed":"2801477c36a19be4f549fe60e54995f03b0ea7b9"},{"fixed":"38f4d6323bcd65e41a691432eddabd2b03acdeee"},{"fixed":"25f753f7f620955a8a51e63e445d8b9076c51396"},{"fixed":"e63c6291ecddf94769ab91f9d8cdb6ca939f7fc6"},{"fixed":"85bd46ab7674b6d357f9a14791352c65fb09eee9"},{"fixed":"6ce78d04c7ea4b66838941b5a4232dd1ee0e2cc7"},{"fixed":"ecfd1a07e78c31d81322fb2d81dc468081cc3004"},{"fixed":"4a2f4be532e3ea4e2b536e411793a05aaa51af25"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90372.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.8.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90372.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"}]}