{"id":"CVE-2026-64442","title":"kernel: staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl() (CVE-2026-64442)","summary":"A flaw was found in the Linux kernel's `rtl8723bs` Wi-Fi driver. Insufficient boundary checks in the information element (IE) parsing loops within the `issue_assocreq()` and `join_cmd_hdl()` functions allow a remote attacker to cause an ou…","severity":"low","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","cwe":"CWE-125","vendor":"Red Hat","product":"Linux","affected":["Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < bc881c9915c4468747d0ca5fd1abd7b313cfb0f4","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 605ebd94d0f469204f3c9f2f84acc71e43e2780f","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < a830bdc82461353bf7b1f8a2ad2689bf5d2de444","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 4c21eec80cf502d9ea18e0b946246b2376452786","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < c38d16b1ffac385c9e4b38447cd5c46af1114b58","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 402f13ec95945f34a210b28df1f8740d3d4a58c5","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < ef61d628dfad38fead1fd2e08979ae9126d011d5","Linux 4.12"],"published":"2026-07-25","updated":"2026-10-19","sourceUpdated":"2026-10-19T23:44:41+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64442.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64442.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-64442"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507269"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64442"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64442"},{"url":"https://lore.kernel.org/linux-cve-announce/2026072539-CVE-2026-64442-7060@gregkh/T"},{"url":"https://git.kernel.org/stable/c/bc881c9915c4468747d0ca5fd1abd7b313cfb0f4"},{"url":"https://git.kernel.org/stable/c/605ebd94d0f469204f3c9f2f84acc71e43e2780f"},{"url":"https://git.kernel.org/stable/c/a830bdc82461353bf7b1f8a2ad2689bf5d2de444"},{"url":"https://git.kernel.org/stable/c/4c21eec80cf502d9ea18e0b946246b2376452786"},{"url":"https://git.kernel.org/stable/c/ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e"},{"url":"https://git.kernel.org/stable/c/c38d16b1ffac385c9e4b38447cd5c46af1114b58"},{"url":"https://git.kernel.org/stable/c/402f13ec95945f34a210b28df1f8740d3d4a58c5"},{"url":"https://git.kernel.org/stable/c/ef61d628dfad38fead1fd2e08979ae9126d011d5"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00287,"epssPercentile":0.2112,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T15:40:51.646471Z"},"ingestedAt":"2026-10-16T17:24:46.821Z","slug":"CVE-2026-64442","body":"## Overview\n\nA flaw was found in the Linux kernel's `rtl8723bs` Wi-Fi driver. Insufficient boundary checks in the information element (IE) parsing loops within the `issue_assocreq()` and `join_cmd_hdl()` functions allow a remote attacker to cause an out-of-bounds read. By sending specially crafted, truncated IE data from a malicious Wi-Fi Access Point, an attacker could trigger a system crash, leading to a denial of service.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64442.json)\n\n**kernel: staging: rtl8723bs: fix OOB reads in IE loops in issue_assocreq() and join_cmd_hdl()** — rated Low by Red Hat. Released 2026-07-25, updated 2026-10-19.\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"sunlit","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":225844,"id":"CVE-2026-64442","ts":1792498481184,"field":"severity","old":"high","new":"low"}]}