{"id":"CVE-2026-64443","title":"kernel: staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop (CVE-2026-64443)","summary":"A flaw was found in the Linux kernel. A remote attacker could exploit an out-of-bounds read vulnerability in the `update_beacon_info()` function by sending a specially crafted wireless Beacon frame containing a malformed Information Elemen…","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 < 5e8db4cff5b45c7c4edc8ae3f302027c3bb32b25","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6dd5e8c3011ebabf417257d7f07901a7c4311539","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 9193c34f75fd9e1ea8a590d7cced464c3380dc29","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < bd953d52d587d42365e399b96c52dbdb13032070","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 69f174a0673b6b7a29b851adb60bc450cdc0ecc4","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < b5cc2f999927f69723ca53f1f2a3aa37dbeda907","Linux >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < ed51de4a86e173c3b0ef78e039c2e49e08b11f16","Linux 4.12"],"published":"2026-07-25","updated":"2026-10-19","sourceUpdated":"2026-10-19T23:44:43+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64443.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64443.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-64443"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507069"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64443"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64443"},{"url":"https://lore.kernel.org/linux-cve-announce/2026072539-CVE-2026-64443-04dd@gregkh/T"},{"url":"https://git.kernel.org/stable/c/5e8db4cff5b45c7c4edc8ae3f302027c3bb32b25"},{"url":"https://git.kernel.org/stable/c/6dd5e8c3011ebabf417257d7f07901a7c4311539"},{"url":"https://git.kernel.org/stable/c/9193c34f75fd9e1ea8a590d7cced464c3380dc29"},{"url":"https://git.kernel.org/stable/c/bd953d52d587d42365e399b96c52dbdb13032070"},{"url":"https://git.kernel.org/stable/c/69f174a0673b6b7a29b851adb60bc450cdc0ecc4"},{"url":"https://git.kernel.org/stable/c/b5cc2f999927f69723ca53f1f2a3aa37dbeda907"},{"url":"https://git.kernel.org/stable/c/ed51de4a86e173c3b0ef78e039c2e49e08b11f16"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.0028,"epssPercentile":0.20411,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T15:40:53.876241Z"},"ingestedAt":"2026-10-16T17:24:46.820Z","slug":"CVE-2026-64443","body":"## Overview\n\nA flaw was found in the Linux kernel. A remote attacker could exploit an out-of-bounds read vulnerability in the `update_beacon_info()` function by sending a specially crafted wireless Beacon frame containing a malformed Information Element (IE). This could lead to the disclosure of sensitive information or cause a denial of-service (DoS) on the affected system.\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-2026-64443.json)\n\n**kernel: staging: rtl8723bs: fix OOB read in update_beacon_info() IE loop** — 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":225842,"id":"CVE-2026-64443","ts":1792498480109,"field":"severity","old":"high","new":"low"}]}