{ "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" } } } }