{"id":"CVE-2026-89764","title":"kernel: rust: devres: fix race between concurrent revokers (CVE-2026-89764)","summary":"A flaw was found in the Linux kernel's `rust: devres` component. A race condition exists when two processes attempt to revoke a `Devres` resource concurrently. This can lead to a use-after-free vulnerability, where one process might free r…","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-825","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-21","sourceUpdated":"2026-09-21T18:29:23+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89764.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89764.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89764"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532452"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89764"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89764"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89764.mbox"},{"url":"https://git.kernel.org/stable/c/acc516dfa1972d31836b50abc0115216cd0fccc5"},{"url":"https://git.kernel.org/stable/c/c7e3d57c705ab1053a6a1bbef96795e792da1540"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00143,"epssPercentile":0.04007,"scores":{"vendor":5.3,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.472Z","slug":"CVE-2026-89764","body":"## Overview\n\nA flaw was found in the Linux kernel's `rust: devres` component. A race condition exists when two processes attempt to revoke a `Devres` resource concurrently. This can lead to a use-after-free vulnerability, where one process might free resources that another process is still actively using. Such an issue could result in system instability or unexpected behavior.\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-2026-89764.json)\n\n**kernel: rust: devres: fix race between concurrent revokers** — 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":208934,"id":"CVE-2026-89764","ts":1790062293932,"field":"cvss","old":"5.3","new":"5.5"},{"seq":202964,"id":"CVE-2026-89764","ts":1789403733138,"field":"cvss","old":"7.8","new":"5.3"},{"seq":202963,"id":"CVE-2026-89764","ts":1789403733138,"field":"severity","old":"high","new":"medium"},{"seq":197658,"id":"CVE-2026-89764","ts":1789384318282,"field":"cvss","old":"5.3","new":"7.8"},{"seq":197657,"id":"CVE-2026-89764","ts":1789384318282,"field":"severity","old":"medium","new":"high"},{"seq":183643,"id":"CVE-2026-89764","ts":1789356676231,"field":"cvss","old":"7.8","new":"5.3"},{"seq":183642,"id":"CVE-2026-89764","ts":1789356676231,"field":"severity","old":"high","new":"medium"},{"seq":153654,"id":"CVE-2026-89764","ts":1789285351782,"field":"cvss","old":null,"new":"7.8"},{"seq":153653,"id":"CVE-2026-89764","ts":1789285351782,"field":"severity","old":"none","new":"high"},{"seq":147173,"id":"CVE-2026-89764","ts":1789270198858,"field":"cvss","old":null,"new":"5.3"},{"seq":147172,"id":"CVE-2026-89764","ts":1789270198858,"field":"severity","old":"none","new":"medium"},{"seq":108926,"id":"CVE-2026-89764","ts":1789183729576,"field":"cvss","old":null,"new":"5.3"},{"seq":108925,"id":"CVE-2026-89764","ts":1789183729576,"field":"severity","old":"none","new":"medium"}]}