{"id":"CVE-2026-89591","title":"kernel: accel/rocket: initialize job domain before cleanup paths (CVE-2026-89591)","summary":"A flaw was found in the Linux kernel's `accel/rocket` module. During error handling in the `rocket_ioctl_submit_job()` function, a cleanup routine may attempt to free a `job->domain` pointer that has not yet been initialized, leading to a …","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-476","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-21","sourceUpdated":"2026-09-21T14:05:42+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89591.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89591.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89591"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532212"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89591"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89591"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89591.mbox"},{"url":"https://git.kernel.org/stable/c/3043230296653a609ab50006899e64bbb2d99465"},{"url":"https://git.kernel.org/stable/c/70e6a33d68a9b03335c5426332666e52d07f45d6"},{"url":"https://git.kernel.org/stable/c/81731f1eda5e6a1dfad31445f741de9bbefbb08e"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00198,"epssPercentile":0.09811,"ingestedAt":"2026-09-14T11:11:19.886Z","slug":"CVE-2026-89591","body":"## Overview\n\nA flaw was found in the Linux kernel's `accel/rocket` module. During error handling in the `rocket_ioctl_submit_job()` function, a cleanup routine may attempt to free a `job->domain` pointer that has not yet been initialized, leading to a NULL pointer dereference. A local attacker could exploit this vulnerability to trigger a system crash, resulting in a Denial of Service (DoS).\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89591.json)\n\n**kernel: accel/rocket: initialize job domain before cleanup paths** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-21.\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":204061,"id":"CVE-2026-89591","ts":1789490231246,"field":"cvss","old":null,"new":"5.5"},{"seq":204060,"id":"CVE-2026-89591","ts":1789490231246,"field":"severity","old":"none","new":"medium"},{"seq":147554,"id":"CVE-2026-89591","ts":1789270211362,"field":"cvss","old":null,"new":"5.5"},{"seq":147553,"id":"CVE-2026-89591","ts":1789270211362,"field":"severity","old":"none","new":"medium"},{"seq":109306,"id":"CVE-2026-89591","ts":1789183731360,"field":"cvss","old":null,"new":"5.5"},{"seq":109305,"id":"CVE-2026-89591","ts":1789183731360,"field":"severity","old":"none","new":"medium"}]}