{"id":"CVE-2026-81012","title":"kernel: platform/x86: hp-bioscfg: fix off-by-one write in hp_get_string_from_buffer() (CVE-2026-81012)","summary":"A flaw was found in the Linux kernel's hp-bioscfg component. The `hp_get_string_from_buffer()` function contains an off-by-one write vulnerability. This occurs because the NUL terminator can be written one byte beyond the allocated buffer,…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-193","vendor":"Red Hat","product":"Linux","affected":["Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a < 8f5aa1506cdddea6b33584c2445b9ce99eeddb64","Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a < 3cc772d0154799961f032e5a992d4a50523e291a","Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a < b15b334fbc3c0c46440f8a892ebf62164fca23d6","Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a < ddf98cf33529714b3ba1a158afb1db5b0f759a1a","Linux >= a34fc329b1895fc8a6eb12099adc47009421ba6a < dc03f05e419f3460342fb7564884f244622634b6","Linux 6.6"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T21:17:50+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81012.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81012.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-81012"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532131"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-81012"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81012"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-81012.mbox"},{"url":"https://git.kernel.org/stable/c/8f5aa1506cdddea6b33584c2445b9ce99eeddb64"},{"url":"https://git.kernel.org/stable/c/3cc772d0154799961f032e5a992d4a50523e291a"},{"url":"https://git.kernel.org/stable/c/b15b334fbc3c0c46440f8a892ebf62164fca23d6"},{"url":"https://git.kernel.org/stable/c/ddf98cf33529714b3ba1a158afb1db5b0f759a1a"},{"url":"https://git.kernel.org/stable/c/dc03f05e419f3460342fb7564884f244622634b6"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00144,"epssPercentile":0.04025,"scores":{"vendor":5.5,"cna":8.4},"ingestedAt":"2026-09-14T15:23:07.453Z","slug":"CVE-2026-81012","body":"## Overview\n\nA flaw was found in the Linux kernel's hp-bioscfg component. The `hp_get_string_from_buffer()` function contains an off-by-one write vulnerability. This occurs because the NUL terminator can be written one byte beyond the allocated buffer, leading to a buffer overflow. An attacker could potentially exploit this to cause memory corruption.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81012.json)\n\n**kernel: platform/x86: hp-bioscfg: fix off-by-one write in hp_get_string_from_buffer()** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.\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- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204130,"id":"CVE-2026-81012","ts":1789490231894,"field":"cvss","old":"8.4","new":"5.5"},{"seq":204129,"id":"CVE-2026-81012","ts":1789490231894,"field":"severity","old":"high","new":"medium"},{"seq":183564,"id":"CVE-2026-81012","ts":1789356675904,"field":"cvss","old":"8.4","new":"5.1"},{"seq":183563,"id":"CVE-2026-81012","ts":1789356675904,"field":"severity","old":"high","new":"medium"},{"seq":153210,"id":"CVE-2026-81012","ts":1789285349561,"field":"cvss","old":null,"new":"8.4"},{"seq":153209,"id":"CVE-2026-81012","ts":1789285349561,"field":"severity","old":"none","new":"high"},{"seq":147734,"id":"CVE-2026-81012","ts":1789270212084,"field":"cvss","old":null,"new":"5.1"},{"seq":147733,"id":"CVE-2026-81012","ts":1789270212084,"field":"severity","old":"none","new":"medium"},{"seq":109488,"id":"CVE-2026-81012","ts":1789183732107,"field":"cvss","old":null,"new":"5.1"},{"seq":109487,"id":"CVE-2026-81012","ts":1789183732107,"field":"severity","old":"none","new":"medium"}]}