{"id":"CVE-2026-80970","title":"kernel: ALSA: FCP: do not copy out an uninitialised init response (CVE-2026-80970)","summary":"A flaw was found in the Linux kernel's Advanced Linux Sound Architecture (ALSA) FireWire Control Protocol (FCP) subsystem. This vulnerability allows a local attacker to trigger the copying of uninitialized kernel memory to userspace. By se…","severity":"low","cvss":3.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cvssSource":"vendor","cwe":["CWE-200","CWE-908"],"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":"2026-10-25","sourceUpdated":"2026-10-25T21:24:54+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80970.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80970.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80970"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532310"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80970"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80970"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80970.mbox"},{"url":"https://kernelcve.org/list/?q=CVE-2026-80970"},{"url":"https://git.kernel.org/stable/c/e9e52437120fb5f802152877ba20c4b406c9fa9e"},{"url":"https://git.kernel.org/stable/c/29ab2df278ab4f1d238cd9c1c393ee00db175cba"},{"url":"https://git.kernel.org/stable/c/4335e387786479889e6db691fe06d345e52ea536"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00206,"epssPercentile":0.10609,"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80970","body":"## Overview\n\nA flaw was found in the Linux kernel's Advanced Linux Sound Architecture (ALSA) FireWire Control Protocol (FCP) subsystem. This vulnerability allows a local attacker to trigger the copying of uninitialized kernel memory to userspace. By sending a specially crafted short or zero-length data stage during the FCP initialization, an attacker could potentially read sensitive information from the kernel's memory.\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 2026-10-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80970.json)\n\n**kernel: ALSA: FCP: do not copy out an uninitialised init response** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-10-25.\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\nFix deferred\n\nWorkarounds / mitigations:\n\n- Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"sunlit","depthScore":18,"depthScoreParts":{"impact":18.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":229483,"id":"CVE-2026-80970","ts":1793019791317,"field":"cvss","old":"7","new":"3.3"},{"seq":229482,"id":"CVE-2026-80970","ts":1793019791317,"field":"severity","old":"high","new":"low"},{"seq":204205,"id":"CVE-2026-80970","ts":1789490240162,"field":"cvss","old":null,"new":"7"},{"seq":204204,"id":"CVE-2026-80970","ts":1789490240162,"field":"severity","old":"none","new":"high"},{"seq":147428,"id":"CVE-2026-80970","ts":1789270210870,"field":"cvss","old":null,"new":"4.5"},{"seq":147427,"id":"CVE-2026-80970","ts":1789270210870,"field":"severity","old":"none","new":"medium"},{"seq":109158,"id":"CVE-2026-80970","ts":1789183730539,"field":"cvss","old":null,"new":"4.5"},{"seq":109157,"id":"CVE-2026-80970","ts":1789183730539,"field":"severity","old":"none","new":"medium"}]}