{"id":"CVE-2026-81015","title":"kernel: platform/x86/amd/pmc: Fix LPS0 and debugfs leaks when STB init fails (CVE-2026-81015)","summary":"A flaw was found in the Linux kernel's AMD PMC (Power Management Controller) driver. When the `amd_stb_s2d_init()` function fails during the driver's initialization process, it can lead to unreleased resources, specifically the LPS0 s2idle…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-459","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T21:18:04+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81015.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81015.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-81015"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532225"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-81015"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81015"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-81015.mbox"},{"url":"https://git.kernel.org/stable/c/30e5f4d0cd0be655c800f10ae3e530391aa6c1b5"},{"url":"https://git.kernel.org/stable/c/76f650a76d6a36a4bee79d94db90a0e935a95477"},{"url":"https://git.kernel.org/stable/c/bc9aa5fe21c3966c80647ed6574b94b863f23c62"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00161,"epssPercentile":0.05754,"scores":{"vendor":4.4,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.475Z","slug":"CVE-2026-81015","body":"## Overview\n\nA flaw was found in the Linux kernel's AMD PMC (Power Management Controller) driver. When the `amd_stb_s2d_init()` function fails during the driver's initialization process, it can lead to unreleased resources, specifically the LPS0 s2idle handler and debugfs directory. This resource leak can corrupt internal lists, potentially causing a kernel crash and a denial of service if the module is reloaded. Additionally, stale registrations can lead to issues during subsequent system suspend-to-idle transitions.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-81015.json)\n\n**kernel: platform/x86/amd/pmc: Fix LPS0 and debugfs leaks when STB init fails** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.\n\nAffected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNo fix planned:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\nNot affected:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nAffected","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204126,"id":"CVE-2026-81015","ts":1789490231858,"field":"cvss","old":"4.4","new":"7"},{"seq":204125,"id":"CVE-2026-81015","ts":1789490231858,"field":"severity","old":"medium","new":"high"},{"seq":202919,"id":"CVE-2026-81015","ts":1789403732943,"field":"cvss","old":"7.8","new":"4.4"},{"seq":202918,"id":"CVE-2026-81015","ts":1789403732943,"field":"severity","old":"high","new":"medium"},{"seq":183560,"id":"CVE-2026-81015","ts":1789356675887,"field":"cvss","old":"7.8","new":"4.4"},{"seq":183559,"id":"CVE-2026-81015","ts":1789356675887,"field":"severity","old":"high","new":"medium"},{"seq":153212,"id":"CVE-2026-81015","ts":1789285349570,"field":"cvss","old":null,"new":"7.8"},{"seq":153211,"id":"CVE-2026-81015","ts":1789285349570,"field":"severity","old":"none","new":"high"},{"seq":147530,"id":"CVE-2026-81015","ts":1789270211270,"field":"cvss","old":null,"new":"4.4"},{"seq":147529,"id":"CVE-2026-81015","ts":1789270211270,"field":"severity","old":"none","new":"medium"},{"seq":109286,"id":"CVE-2026-81015","ts":1789183731283,"field":"cvss","old":null,"new":"4.4"},{"seq":109285,"id":"CVE-2026-81015","ts":1789183731283,"field":"severity","old":"none","new":"medium"}]}