{"id":"CVE-2026-74340","summary":"wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication\n\nThe firmware-controlled rsp-\u003ecount field is used as the loop bound for\nindexing into the flexible rsp-\u003eregs[] array without validation against\nthe message length. A count exceeding the actual data causes out-of-\nbounds reads from the heap-allocated message buffer.\n\nAdd a check that count fits within the received message.","modified":"2026-08-18T03:56:28.678881711Z","published":"2026-08-15T05:58:30.558Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74340.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0907c06dccae9e3c8d5a68eb9014beec73a36e79"},{"type":"WEB","url":"https://git.kernel.org/stable/c/22b0b8572a64362531dd0ed499b75e16282aeb2b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/23d210877968657bd07e1a517e0b516db20a1d80"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3cf92b44c4fb88a5e8de8733a4494c0956606bca"},{"type":"WEB","url":"https://git.kernel.org/stable/c/64228dfc4247aca178c01e5a37af7d8dcc7a6089"},{"type":"WEB","url":"https://git.kernel.org/stable/c/df2187acfca6c6cca372c5d35f42394d9c270b09"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f03782f7f41f2afee5076a1ef08ced5649218771"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f987efff29a5fe45320ea5991c9d5cb98b676953"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74340.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74340"},{"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":"43efa3c0f241e04862be8e6a68ff765d36cde1ba"},{"fixed":"22b0b8572a64362531dd0ed499b75e16282aeb2b"},{"fixed":"3cf92b44c4fb88a5e8de8733a4494c0956606bca"},{"fixed":"0907c06dccae9e3c8d5a68eb9014beec73a36e79"},{"fixed":"64228dfc4247aca178c01e5a37af7d8dcc7a6089"},{"fixed":"23d210877968657bd07e1a517e0b516db20a1d80"},{"fixed":"f03782f7f41f2afee5076a1ef08ced5649218771"},{"fixed":"f987efff29a5fe45320ea5991c9d5cb98b676953"},{"fixed":"df2187acfca6c6cca372c5d35f42394d9c270b09"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74340.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.11.0"},{"fixed":"5.10.261"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74340.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:H/I:N/A:H"}]}