{"id":"CVE-2026-80967","title":"kernel: ALSA: pcxhr: initialize mutexes before requesting threaded IRQ (CVE-2026-80967)","summary":"A flaw was found in the ALSA pcxhr driver within the Linux kernel. The `pcxhr_probe()` function requests a threaded interrupt before properly initializing a critical mutex (`mgr->lock`). This oversight could allow an early interrupt to ope…","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-909","vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","affected":["enterprise_linux 10","enterprise_linux 6","enterprise_linux 7","enterprise_linux 8","enterprise_linux 9","openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T18:27:18+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80967.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80967.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80967"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80967"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80967"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80967.mbox"},{"url":"https://git.kernel.org/stable/c/039602d6ddb1febbb0561b30dab04461f78a1319"},{"url":"https://git.kernel.org/stable/c/a5f405adb0229c9cf64eb3d695c333c92e3d3d4f"},{"url":"https://git.kernel.org/stable/c/ede25b7fea0d7487ee8528bf35dc7b9a1cbcd814"},{"url":"https://git.kernel.org/stable/c/c069b3cfd753d6688ea0271c43553631ab38ce10"},{"url":"https://git.kernel.org/stable/c/7ef9ad82d95dd3c74570d80a689a0570fbc7539e"},{"url":"https://git.kernel.org/stable/c/7cf280fbef5db6310e1b32074c8c34d1ba459796"},{"url":"https://git.kernel.org/stable/c/6c97817e20598e5473094e0e38d1f51f1cf4dfff"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00182,"epssPercentile":0.08055,"scores":{"vendor":5.5,"cna":8.4},"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80967","body":"## Overview\n\nA flaw was found in the ALSA pcxhr driver within the Linux kernel. The `pcxhr_probe()` function requests a threaded interrupt before properly initializing a critical mutex (`mgr->lock`). This oversight could allow an early interrupt to operate on an uninitialized mutex, potentially leading to system instability or a denial of service (DoS) condition. A local attacker could potentially exploit this to impact system availability.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80967.json)\n\n**kernel: ALSA: pcxhr: initialize mutexes before requesting threaded IRQ** — rated Low 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 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\nNo fix planned:\n\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 10\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\nOut of support scope","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204194,"id":"CVE-2026-80967","ts":1789490239437,"field":"cvss","old":"8.4","new":"5.5"},{"seq":204193,"id":"CVE-2026-80967","ts":1789490239437,"field":"severity","old":"high","new":"medium"},{"seq":183602,"id":"CVE-2026-80967","ts":1789356676061,"field":"cvss","old":"8.4","new":"4.1"},{"seq":183601,"id":"CVE-2026-80967","ts":1789356676061,"field":"severity","old":"high","new":"medium"},{"seq":153150,"id":"CVE-2026-80967","ts":1789285349277,"field":"cvss","old":null,"new":"8.4"},{"seq":153149,"id":"CVE-2026-80967","ts":1789285349277,"field":"severity","old":"none","new":"high"},{"seq":147562,"id":"CVE-2026-80967","ts":1789270211394,"field":"cvss","old":null,"new":"4.1"},{"seq":147561,"id":"CVE-2026-80967","ts":1789270211394,"field":"severity","old":"none","new":"medium"},{"seq":109322,"id":"CVE-2026-80967","ts":1789183731421,"field":"cvss","old":null,"new":"4.1"},{"seq":109321,"id":"CVE-2026-80967","ts":1789183731421,"field":"severity","old":"none","new":"medium"}]}