{"id":"CVE-2026-89463","title":"kernel: power: supply: ucs1002: fix use-after-free on remove (CVE-2026-89463)","summary":"A flaw was found in the Linux kernel's `ucs1002` power supply driver. The driver does not properly cancel a delayed work item during device removal, leading to a use-after-free vulnerability. This issue allows the system to attempt to acce…","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-364","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T12:25:29+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89463.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89463.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89463"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532374"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89463"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89463"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89463.mbox"},{"url":"https://git.kernel.org/stable/c/35242c93d35f391afdc84cef6236b8ad57f1df24"},{"url":"https://git.kernel.org/stable/c/39b60d615dfa1725c235351fb12bc72e5f8a8d32"},{"url":"https://git.kernel.org/stable/c/4ca2a4678202f15eb790eb7f1d562061709caea7"},{"url":"https://git.kernel.org/stable/c/609af0ceeaefdfa42cd01dd060b20f2e41f9a232"},{"url":"https://git.kernel.org/stable/c/00c19f8a9a58a318a76fd6f735a8aab3f8ead393"},{"url":"https://git.kernel.org/stable/c/a9a7bb801c443a4d9fc623c4a47deb53accb70bb"},{"url":"https://git.kernel.org/stable/c/2ec4d203ecb06d327af67e32097fe8f774838a40"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00205,"epssPercentile":0.10899,"ingestedAt":"2026-09-14T15:23:07.453Z","slug":"CVE-2026-89463","body":"## Overview\n\nA flaw was found in the Linux kernel's `ucs1002` power supply driver. The driver does not properly cancel a delayed work item during device removal, leading to a use-after-free vulnerability. This issue allows the system to attempt to access memory that has already been freed, which can result in system instability or a denial of service.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat OpenShift Container Platform 4 · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89463.json)\n\n**kernel: power: supply: ucs1002: fix use-after-free on remove** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-16.\n\nAffected:\n\n- Red Hat OpenShift Container Platform 4\n\nNo fix planned:\n\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nFix deferred","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":205444,"id":"CVE-2026-89463","ts":1789576717532,"field":"cvss","old":"5.7","new":"5.5"},{"seq":203970,"id":"CVE-2026-89463","ts":1789490230852,"field":"cvss","old":null,"new":"5.7"},{"seq":203969,"id":"CVE-2026-89463","ts":1789490230852,"field":"severity","old":"none","new":"medium"},{"seq":147315,"id":"CVE-2026-89463","ts":1789270209184,"field":"cvss","old":null,"new":"5.7"},{"seq":147314,"id":"CVE-2026-89463","ts":1789270209184,"field":"severity","old":"none","new":"medium"},{"seq":109068,"id":"CVE-2026-89463","ts":1789183730182,"field":"cvss","old":null,"new":"5.7"},{"seq":109067,"id":"CVE-2026-89463","ts":1789183730182,"field":"severity","old":"none","new":"medium"}]}