{"id":"CVE-2026-89474","title":"kernel: power: supply: bq256xx: drain usb_work before freeing the charger (CVE-2026-89474)","summary":"A flaw was found in the Linux kernel's power supply subsystem, specifically within the bq256xx driver. This vulnerability occurs when a USB work item attempts to access a charger object after it has been freed. This timing issue can lead 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-825","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T08:40:12+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89474.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89474.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89474"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532371"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89474"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89474"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89474.mbox"},{"url":"https://git.kernel.org/stable/c/2dd6cd823777bea6d9a880a12a92a73ec76aee0b"},{"url":"https://git.kernel.org/stable/c/9a467bd1e6811011026ad4c8de701b940d88a00c"},{"url":"https://git.kernel.org/stable/c/9e1aba34df9a87d53460888e05718717c0f69343"},{"url":"https://git.kernel.org/stable/c/c8addb842ae8dcf69c15fc976e33e3bd538a41d7"},{"url":"https://git.kernel.org/stable/c/9dcfdf6c598301b278f0b3490eb2bf4f600524e2"},{"url":"https://git.kernel.org/stable/c/fd08d4dbbec07a44f01b0ddb041912be0dc88f8c"},{"url":"https://git.kernel.org/stable/c/2cfb59dc9df8b5ebdd95e3d874a7f4690cee2bc8"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00172,"epssPercentile":0.06957,"ingestedAt":"2026-09-14T15:23:07.453Z","slug":"CVE-2026-89474","body":"## Overview\n\nA flaw was found in the Linux kernel's power supply subsystem, specifically within the bq256xx driver. This vulnerability occurs when a USB work item attempts to access a charger object after it has been freed. This timing issue can lead to a use-after-free condition, potentially causing system instability or a denial of service.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89474.json)\n\n**kernel: power: supply: bq256xx: drain usb_work before freeing the charger** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-16.\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":205476,"id":"CVE-2026-89474","ts":1789576721609,"field":"cvss","old":"4.4","new":"5.5"},{"seq":203974,"id":"CVE-2026-89474","ts":1789490230868,"field":"cvss","old":null,"new":"4.4"},{"seq":203973,"id":"CVE-2026-89474","ts":1789490230868,"field":"severity","old":"none","new":"medium"},{"seq":147313,"id":"CVE-2026-89474","ts":1789270209041,"field":"cvss","old":null,"new":"4.4"},{"seq":147312,"id":"CVE-2026-89474","ts":1789270209041,"field":"severity","old":"none","new":"medium"},{"seq":109064,"id":"CVE-2026-89474","ts":1789183730167,"field":"cvss","old":null,"new":"4.4"},{"seq":109063,"id":"CVE-2026-89474","ts":1789183730167,"field":"severity","old":"none","new":"medium"}]}