CVE-2026-89468 power: supply: lp8788-charger: fix use-after-free on remove
A use-after-free vulnerability in the Linux kernel lp8788-charger driver allows local attackers to cause denial of service or execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-89468?
CVE-2026-89468 is an use after free vulnerability in Linux, published on 11 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
power: supply: lp8788-charger: fix use-after-free on remove
lp8788_charger_remove() flushes charger_work before unregistering the IRQs. An IRQ thread can queue charger_work after flush_work() has returned. The work can then run after devres frees pchg and dereference it in lp8788_charger_event().
Unregister the IRQs first. free_irq() waits for any running threaded handler, so no handler can queue more work afterwards. Then use cancel_work_sync() to cancel pending work or wait for running work to finish.
This issue was found by an in-house static analysis tool.
Which versions are affected by CVE-2026-89468?
How do I fix CVE-2026-89468?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-89468 being exploited?
There is no known exploitation of CVE-2026-89468 in the wild and no public exploit code.
Sources
Also known as AZL-100563, BELL-CVE-2026-89468, DEBIAN-CVE-2026-89468, GHSA-v57r-whwp-c5pf, UBUNTU-CVE-2026-89468.