{"id":"CVE-2026-64536","title":"staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop\n\nThe loop in is_ap_in_tkip() iterates over IEs without verifying that\nenough bytes remain before dereferenc…","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 >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < d2055332297e24c63fffda943ef7a5eefc0a6019","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6f26cc55affd9d7f88ae2f5d12db4ecf9072c209","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 204b22c8df115370037248859bf0fa62db73a396","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 4380b3860d887a13555ff024a58dfc05b490dfd6","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 3bf39f711ff27c64be8680a8938bcc5001982e81","Linux 4.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T15:41:58.313988Z"},"published":"2026-07-27","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:42:40.732Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64536","references":[{"url":"https://git.kernel.org/stable/c/ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7"},{"url":"https://git.kernel.org/stable/c/d2055332297e24c63fffda943ef7a5eefc0a6019"},{"url":"https://git.kernel.org/stable/c/6f26cc55affd9d7f88ae2f5d12db4ecf9072c209"},{"url":"https://git.kernel.org/stable/c/204b22c8df115370037248859bf0fa62db73a396"},{"url":"https://git.kernel.org/stable/c/a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395"},{"url":"https://git.kernel.org/stable/c/4380b3860d887a13555ff024a58dfc05b490dfd6"},{"url":"https://git.kernel.org/stable/c/3bf39f711ff27c64be8680a8938bcc5001982e81"}],"tags":["cve.org"],"epss":0.00249,"epssPercentile":0.15125,"ingestedAt":"2026-10-16T17:24:46.827Z","slug":"CVE-2026-64536","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop\n\nThe loop in is_ap_in_tkip() iterates over IEs without verifying that\nenough bytes remain before dereferencing the IE header or its payload:\n\n- pIE->element_id and pIE->length are read without checking that\n  i + sizeof(*pIE) <= ie_length, so a truncated IE at the end of the\n  buffer causes an OOB read.\n\n- For WLAN_EID_VENDOR_SPECIFIC the code compares pIE->data + 12,\n  which requires pIE->length >= 16.  For WLAN_EID_RSN it compares\n  pIE->data + 8, requiring pIE->length >= 12.  Neither requirement\n  is checked.\n\nAdd the missing IE header and payload bounds checks and guard each\ndata access with an explicit pIE->length minimum, matching the\npattern established in update_beacon_info().\n\n## Affected\n\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < d2055332297e24c63fffda943ef7a5eefc0a6019`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6f26cc55affd9d7f88ae2f5d12db4ecf9072c209`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 204b22c8df115370037248859bf0fa62db73a396`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 4380b3860d887a13555ff024a58dfc05b490dfd6`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 3bf39f711ff27c64be8680a8938bcc5001982e81`\n- `Linux 4.12`\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,"exploitation":0,"ransomware":0},"changes":[]}