{"id":"CVE-2026-80953","title":"kernel: i3c: master: adi: initialize the lock before enabling interrupts (CVE-2026-80953)","summary":"A flaw was found in the Linux kernel's i3c master driver. A race condition exists where the `adi_i3c_master_probe()` function requests an interrupt and unmasks a register before a critical lock (`xferqueue.lock`) is properly initialized. T…","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 OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T17:36:06+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80953.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80953.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80953"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532115"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80953"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80953"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80953.mbox"},{"url":"https://git.kernel.org/stable/c/8a53f9102a0d3eeb8784999f925028acf339c276"},{"url":"https://git.kernel.org/stable/c/a15a1b95de980362c14f32f519b293b0d12ce86f"},{"url":"https://git.kernel.org/stable/c/de8c32b0a246bbb4b44ec29e12769496a0bf66f7"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.0018,"epssPercentile":0.07863,"scores":{"vendor":4.4,"cna":8.4},"ingestedAt":"2026-09-14T15:23:07.476Z","slug":"CVE-2026-80953","body":"## Overview\n\nA flaw was found in the Linux kernel's i3c master driver. A race condition exists where the `adi_i3c_master_probe()` function requests an interrupt and unmasks a register before a critical lock (`xferqueue.lock`) is properly initialized. This allows a pending interrupt to attempt to acquire an uninitialized lock, which can lead to a kernel crash and a denial of service. This issue can be triggered by a local attacker.\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-2026-80953.json)\n\n**kernel: i3c: master: adi: initialize the lock before enabling interrupts** — 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":204236,"id":"CVE-2026-80953","ts":1789490240455,"field":"cvss","old":"4.4","new":"5.5"},{"seq":202945,"id":"CVE-2026-80953","ts":1789403733057,"field":"cvss","old":"8.4","new":"4.4"},{"seq":202944,"id":"CVE-2026-80953","ts":1789403733057,"field":"severity","old":"high","new":"medium"},{"seq":183626,"id":"CVE-2026-80953","ts":1789356676159,"field":"cvss","old":"8.4","new":"4.4"},{"seq":183625,"id":"CVE-2026-80953","ts":1789356676159,"field":"severity","old":"high","new":"medium"},{"seq":153136,"id":"CVE-2026-80953","ts":1789285349185,"field":"cvss","old":null,"new":"8.4"},{"seq":153135,"id":"CVE-2026-80953","ts":1789285349185,"field":"severity","old":"none","new":"high"},{"seq":147748,"id":"CVE-2026-80953","ts":1789270212138,"field":"cvss","old":null,"new":"4.4"},{"seq":147747,"id":"CVE-2026-80953","ts":1789270212138,"field":"severity","old":"none","new":"medium"},{"seq":109498,"id":"CVE-2026-80953","ts":1789183732146,"field":"cvss","old":null,"new":"4.4"},{"seq":109497,"id":"CVE-2026-80953","ts":1789183732146,"field":"severity","old":"none","new":"medium"}]}