{"id":"CVE-2026-64441","title":"staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr()\n\nThree IE/attribute parsing functions have missing bounds checks.\n\nrtw_…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < efa27d487abcdec79669a60a6d94d5d6eceb7c1d","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 2ea1ce30ead61589214240e8d33d96310fd613e5","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < b27ecba3196f6c14e3809595ebd69c0c2392512a","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 4b51ee8a40fe47864197d73cc02b191de7a6b072","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 729c4e72563bda0f1725db1db9ea08df06f41d9b","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344","Linux 4.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:40:49.431069Z"},"published":"2026-07-25","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:42:36.215Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64441","references":[{"url":"https://git.kernel.org/stable/c/efa27d487abcdec79669a60a6d94d5d6eceb7c1d"},{"url":"https://git.kernel.org/stable/c/2ea1ce30ead61589214240e8d33d96310fd613e5"},{"url":"https://git.kernel.org/stable/c/b27ecba3196f6c14e3809595ebd69c0c2392512a"},{"url":"https://git.kernel.org/stable/c/6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c"},{"url":"https://git.kernel.org/stable/c/4b51ee8a40fe47864197d73cc02b191de7a6b072"},{"url":"https://git.kernel.org/stable/c/729c4e72563bda0f1725db1db9ea08df06f41d9b"},{"url":"https://git.kernel.org/stable/c/1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344"}],"tags":["cve.org"],"epss":0.00256,"epssPercentile":0.16129,"ingestedAt":"2026-10-16T17:24:46.825Z","slug":"CVE-2026-64441","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr()\n\nThree IE/attribute parsing functions have missing bounds checks.\n\nrtw_get_sec_ie() and rtw_get_wapi_ie() iterate over a raw IE buffer\nwithout verifying that the header bytes (tag + length) are within the\nremaining buffer before reading them.  Additionally, rtw_get_sec_ie()\ncompares the 4-byte WPA OUI at cnt+2 without checking that at least\n6 bytes remain, and rtw_get_wapi_ie() compares a 4-byte WAPI OUI at\ncnt+6 without checking that at least 10 bytes remain.\n\nrtw_get_wps_attr() reads wps_ie[0] and wps_ie+2 unconditionally at\nentry, before verifying that wps_ielen is large enough to contain\nthe 6-byte WPS IE header (element_id + length + 4-byte OUI).  Inside\nthe attribute loop, get_unaligned_be16() is called on attr_ptr and\nattr_ptr+2 without checking that 4 bytes remain in the buffer.\n\nAdd a cnt+2 bounds check before each loop body in rtw_get_sec_ie()\nand rtw_get_wapi_ie(), guard each multi-byte comparison with a minimum\nIE length requirement, add a wps_ielen < 6 early return in\nrtw_get_wps_attr(), and add a 4-byte bounds check in its inner loop.\n\n## Affected\n\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < efa27d487abcdec79669a60a6d94d5d6eceb7c1d`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 2ea1ce30ead61589214240e8d33d96310fd613e5`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < b27ecba3196f6c14e3809595ebd69c0c2392512a`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 4b51ee8a40fe47864197d73cc02b191de7a6b072`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 729c4e72563bda0f1725db1db9ea08df06f41d9b`\n- `Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344`\n- `Linux 4.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}