{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64536","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T15:36:31.795Z","datePublished":"2026-07-27T06:36:04.736Z","dateUpdated":"2026-08-17T04:57:12.274Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T04:57:12.274Z"},"descriptions":[{"lang":"en","value":"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 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()."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","baseScore":8.1,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - A nearby malicious WiFi access point can supply crafted beacon or probe-response IEs that reach the vulnerable association path over the air.\nAC:L - The attacker directly controls the malformed IE lengths and contents, and exploitation requires neither a race nor conditions outside the attacker's control.\nPR:N - The vulnerable code executes before WPA credentials are verified; transmitting management frames as a malicious or spoofed AP requires no privileges on the target.\nUI:N - An attacker impersonating a configured AP can trigger the path during automatic connection or reconnection without contemporaneous user action.\nS:U - The vulnerable driver and affected kernel resources belong to the same host security authority, with no demonstrated VM, sandbox, or IOMMU boundary crossing.\nC:H - The unchecked IE-header and fixed-offset comparisons read beyond attacker-declared buffer boundaries into adjacent kernel memory; under the required conservative OOB-read rule, confidentiality impact is high.\nI:N - The flaw performs reads and comparisons only, with no memory write or demonstrated data-modification primitive.\nA:H - Malformed IEs can cause kernel out-of-bounds accesses during association and potentially fault or oops the kernel; a nearby attacker can repeat the exchange."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8723bs/core/rtw_wlan_util.c"],"versions":[{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"d2055332297e24c63fffda943ef7a5eefc0a6019","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"6f26cc55affd9d7f88ae2f5d12db4ecf9072c209","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"204b22c8df115370037248859bf0fa62db73a396","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"4380b3860d887a13555ff024a58dfc05b490dfd6","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"3bf39f711ff27c64be8680a8938bcc5001982e81","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8723bs/core/rtw_wlan_util.c"],"versions":[{"version":"4.12","status":"affected"},{"version":"0","lessThan":"4.12","status":"unaffected","versionType":"semver"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.96","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.39","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.4","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.12.96"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.18.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"7.1.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"7.2"}]}]}],"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"}],"title":"staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop","x_generator":{"engine":"bippy-1.2.0"}}}}