{"id":"CVE-2026-74340","title":"wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication","summary":"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->count field is used as the loop bound for\nindexing into the f…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 22b0b8572a64362531dd0ed499b75e16282aeb2b","Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 3cf92b44c4fb88a5e8de8733a4494c0956606bca","Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 0907c06dccae9e3c8d5a68eb9014beec73a36e79","Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 64228dfc4247aca178c01e5a37af7d8dcc7a6089","Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 23d210877968657bd07e1a517e0b516db20a1d80","Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < f03782f7f41f2afee5076a1ef08ced5649218771","Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < f987efff29a5fe45320ea5991c9d5cb98b676953","Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < df2187acfca6c6cca372c5d35f42394d9c270b09","Linux 4.11"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T18:53:57.508619Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:55:34.097Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74340","references":[{"url":"https://git.kernel.org/stable/c/22b0b8572a64362531dd0ed499b75e16282aeb2b"},{"url":"https://git.kernel.org/stable/c/3cf92b44c4fb88a5e8de8733a4494c0956606bca"},{"url":"https://git.kernel.org/stable/c/0907c06dccae9e3c8d5a68eb9014beec73a36e79"},{"url":"https://git.kernel.org/stable/c/64228dfc4247aca178c01e5a37af7d8dcc7a6089"},{"url":"https://git.kernel.org/stable/c/23d210877968657bd07e1a517e0b516db20a1d80"},{"url":"https://git.kernel.org/stable/c/f03782f7f41f2afee5076a1ef08ced5649218771"},{"url":"https://git.kernel.org/stable/c/f987efff29a5fe45320ea5991c9d5cb98b676953"},{"url":"https://git.kernel.org/stable/c/df2187acfca6c6cca372c5d35f42394d9c270b09"}],"tags":["cve.org"],"epss":0.00419,"epssPercentile":0.34713,"ingestedAt":"2026-10-16T19:46:24.377Z","slug":"CVE-2026-74340","body":"## Overview\n\nIn 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->count field is used as the loop bound for\nindexing into the flexible rsp->regs[] 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.\n\n## Affected\n\n- `Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 22b0b8572a64362531dd0ed499b75e16282aeb2b`\n- `Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 3cf92b44c4fb88a5e8de8733a4494c0956606bca`\n- `Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 0907c06dccae9e3c8d5a68eb9014beec73a36e79`\n- `Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 64228dfc4247aca178c01e5a37af7d8dcc7a6089`\n- `Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < 23d210877968657bd07e1a517e0b516db20a1d80`\n- `Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < f03782f7f41f2afee5076a1ef08ced5649218771`\n- `Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < f987efff29a5fe45320ea5991c9d5cb98b676953`\n- `Linux >= 43efa3c0f241e04862be8e6a68ff765d36cde1ba < df2187acfca6c6cca372c5d35f42394d9c270b09`\n- `Linux 4.11`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}