Medium [CVE-2026-89473] Denial of service via bq25890 driver reference leak.
This medium-severity Red Hat Linux advisory covers CVE-2026-89473.
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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 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. Red Hat severity: Moderate — CVSS 4.4 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-772.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 24 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 24 minutes ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 24 minutes ago·verify at source
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