{"id":"CVE-2026-89473","title":"power: supply: bq25890: Fix power_supply reference leak","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq25890: Fix power_supply reference leak\n\nbq25890_fw_probe() acquires a reference to a secondary charger using\npower_supply_get_by_name(), but the refere…","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":"Linux","product":"Linux","affected":["Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 976c10d883a02968f3f58be0cee499d1fd2ba68a","Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 81b558afda9321c1a70971a39071d156f3e26950","Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 238320ad029a3eedabb86286a28cab55bca629b9","Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 58f1025eca92734eadc063715b98f62538286468","Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 863c32a83e4235eb0cbf6106f2b124e645302156","Linux 6.3"],"published":"2026-09-11","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:47:22.219Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89473","references":[{"url":"https://git.kernel.org/stable/c/976c10d883a02968f3f58be0cee499d1fd2ba68a"},{"url":"https://git.kernel.org/stable/c/81b558afda9321c1a70971a39071d156f3e26950"},{"url":"https://git.kernel.org/stable/c/238320ad029a3eedabb86286a28cab55bca629b9"},{"url":"https://git.kernel.org/stable/c/58f1025eca92734eadc063715b98f62538286468"},{"url":"https://git.kernel.org/stable/c/863c32a83e4235eb0cbf6106f2b124e645302156"},{"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"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00206,"epssPercentile":0.10478,"ingestedAt":"2026-09-14T15:23:07.453Z","slug":"CVE-2026-89473","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\npower: supply: bq25890: Fix power_supply reference leak\n\nbq25890_fw_probe() acquires a reference to a secondary charger using\npower_supply_get_by_name(), but the reference is not released on later\nprobe failures or on driver detach.\n\nIn particular, failures after bq25890_fw_probe() returns successfully,\nsuch as a failure in bq25890_hw_init(), also leak the reference.\n\nRegister a device-managed cleanup action immediately after acquiring\nthe secondary charger. This releases the reference on all subsequent\nprobe failures and on driver detach.\n\nFound by code review.\n\n## Affected\n\n- `Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 976c10d883a02968f3f58be0cee499d1fd2ba68a`\n- `Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 81b558afda9321c1a70971a39071d156f3e26950`\n- `Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 238320ad029a3eedabb86286a28cab55bca629b9`\n- `Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 58f1025eca92734eadc063715b98f62538286468`\n- `Linux >= d54bf877fd878ee45cbc88d399fb98b0b1c4484d < 863c32a83e4235eb0cbf6106f2b124e645302156`\n- `Linux 6.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\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)","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"}]}