{"id":"CVE-2026-89473","title":"kernel: power: supply: bq25890: Fix power_supply reference leak (CVE-2026-89473)","summary":"A flaw was found in the Linux kernel's bq25890 power supply driver. The bq25890_fw_probe() function acquires a reference to a secondary charger but fails to release it on subsequent probe failures or driver detach. This reference leak can …","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-772","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-18","sourceUpdated":"2026-09-18T21:13:33+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89473.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89473.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89473"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532246"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89473"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89473"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89473.mbox"},{"url":"https://git.kernel.org/stable/c/238320ad029a3eedabb86286a28cab55bca629b9"},{"url":"https://git.kernel.org/stable/c/58f1025eca92734eadc063715b98f62538286468"},{"url":"https://git.kernel.org/stable/c/81b558afda9321c1a70971a39071d156f3e26950"},{"url":"https://git.kernel.org/stable/c/863c32a83e4235eb0cbf6106f2b124e645302156"},{"url":"https://git.kernel.org/stable/c/976c10d883a02968f3f58be0cee499d1fd2ba68a"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.002,"epssPercentile":0.10102,"ingestedAt":"2026-09-14T15:23:07.453Z","slug":"CVE-2026-89473","body":"## Overview\n\nA flaw was found in the Linux kernel's bq25890 power supply driver. The bq25890_fw_probe() function acquires a reference to a secondary charger but fails to release it on subsequent probe failures or driver detach. This reference leak can lead to resource exhaustion over time, potentially allowing a local attacker to cause a Denial of Service (DoS) by making the system unstable or unresponsive.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89473.json)\n\n**kernel: power: supply: bq25890: Fix power_supply reference leak** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.\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":206968,"id":"CVE-2026-89473","ts":1789749723280,"field":"cvss","old":"4.4","new":"5.5"},{"seq":204047,"id":"CVE-2026-89473","ts":1789490231189,"field":"cvss","old":null,"new":"4.4"},{"seq":204046,"id":"CVE-2026-89473","ts":1789490231189,"field":"severity","old":"none","new":"medium"},{"seq":147490,"id":"CVE-2026-89473","ts":1789270211113,"field":"cvss","old":null,"new":"4.4"},{"seq":147489,"id":"CVE-2026-89473","ts":1789270211113,"field":"severity","old":"none","new":"medium"},{"seq":109254,"id":"CVE-2026-89473","ts":1789183731160,"field":"cvss","old":null,"new":"4.4"},{"seq":109253,"id":"CVE-2026-89473","ts":1789183731160,"field":"severity","old":"none","new":"medium"}]}