{"id":"CVE-2026-81013","title":"kernel: platform/x86: hp-bioscfg: fix heap OOB read on empty password write (CVE-2026-81013)","summary":"A flaw was found in the hp-bioscfg component of the Linux kernel. A local user could trigger a heap out-of-bounds read by writing an empty string to the current_password or new_password fields. This occurs because the validate_password_inp…","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-125","vendor":"Red Hat","product":"Linux","affected":["Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 < 21243c15e1d31f0df1517435e3a7784747f19043","Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 < cecb8154bd5fa6c8ddbd1a4e8216bbc0f0eb9828","Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 < 0f9aad08424882dd5714b53d29ae044060890752","Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 < b699e5c1f63a9e79946c35598c8a6f7af2c356b8","Linux >= 8646a3b5ee3a5b384a22a721f37c24274d974045 < 2b2ec354f905c14e3270e8ec3ab50f7d8ad73bab","Linux 6.6"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T21:17:54+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81013.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81013.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-81013"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532351"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-81013"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81013"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-81013.mbox"},{"url":"https://git.kernel.org/stable/c/21243c15e1d31f0df1517435e3a7784747f19043"},{"url":"https://git.kernel.org/stable/c/cecb8154bd5fa6c8ddbd1a4e8216bbc0f0eb9828"},{"url":"https://git.kernel.org/stable/c/0f9aad08424882dd5714b53d29ae044060890752"},{"url":"https://git.kernel.org/stable/c/b699e5c1f63a9e79946c35598c8a6f7af2c356b8"},{"url":"https://git.kernel.org/stable/c/2b2ec354f905c14e3270e8ec3ab50f7d8ad73bab"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.0018,"epssPercentile":0.07889,"ingestedAt":"2026-09-14T15:23:07.454Z","slug":"CVE-2026-81013","body":"## Overview\n\nA flaw was found in the hp-bioscfg component of the Linux kernel. A local user could trigger a heap out-of-bounds read by writing an empty string to the current_password or new_password fields. This occurs because the validate_password_input() function attempts to access memory before the allocated buffer when processing an empty input. This vulnerability could lead to information disclosure by reading one byte of data past the buffer.\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-2026-81013.json)\n\n**kernel: platform/x86: hp-bioscfg: fix heap OOB read on empty password write** — 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":204128,"id":"CVE-2026-81013","ts":1789490231876,"field":"cvss","old":null,"new":"5.5"},{"seq":204127,"id":"CVE-2026-81013","ts":1789490231876,"field":"severity","old":"none","new":"medium"},{"seq":147345,"id":"CVE-2026-81013","ts":1789270210542,"field":"cvss","old":null,"new":"4.7"},{"seq":147344,"id":"CVE-2026-81013","ts":1789270210542,"field":"severity","old":"none","new":"medium"},{"seq":109098,"id":"CVE-2026-81013","ts":1789183730297,"field":"cvss","old":null,"new":"4.7"},{"seq":109097,"id":"CVE-2026-81013","ts":1789183730297,"field":"severity","old":"none","new":"medium"}]}