{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64441","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T15:36:31.788Z","datePublished":"2026-07-25T08:51:13.834Z","dateUpdated":"2026-08-17T04:55:43.148Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T04:55:43.148Z"},"descriptions":[{"lang":"en","value":"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_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."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - Malformed beacon or probe-response information elements reach the vulnerable parsers over the air, so the attacker only needs to be within Wi-Fi radio range.\nAC:L - A crafted truncated WPS Selected Registrar attribute followed by controlled IE data deterministically supplies the out-of-bounds length; no race or uncontrollable condition is required.\nPR:N - Beacon and probe-response management frames are processed before association or authentication, and no capability or credential check gates this path.\nUI:N - The driver processes beacons automatically, and routine system-initiated scans reach the WPS path without human action.\nS:U - Exploitation compromises the kernel of the affected host without crossing a separate virtualization or authorization boundary.\nC:H - The out-of-bounds attribute length reaches a copy into a one-byte stack object, permitting control-flow corruption and potential kernel code execution with access to arbitrary kernel-resident data.\nI:H - The attacker can make adjacent controlled frame bytes overflow the one-byte stack destination, potentially overwriting control data and executing arbitrary kernel code.\nA:H - The bounded OOB reads can fault, while the derived stack overflow can trigger an oops, stack-canary panic, or control-flow failure and can be repeated using injected management frames."}]}],"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_ieee80211.c"],"versions":[{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"efa27d487abcdec79669a60a6d94d5d6eceb7c1d","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"2ea1ce30ead61589214240e8d33d96310fd613e5","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"b27ecba3196f6c14e3809595ebd69c0c2392512a","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"4b51ee8a40fe47864197d73cc02b191de7a6b072","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"729c4e72563bda0f1725db1db9ea08df06f41d9b","status":"affected","versionType":"git"},{"version":"554c0a3abf216c991c5ebddcdb2c08689ecd290b","lessThan":"1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344","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_ieee80211.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":"6.12.97","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.40","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":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.18.40"},{"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/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"}],"title":"staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr()","x_generator":{"engine":"bippy-1.2.0"}}}}