CVE-2026-89468

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux98a2766493589c18c327ae3dad5243b53fcb5f70 < 88d8eadfad5d9ff967e74090152940bcfa27df69affected
LinuxLinux98a2766493589c18c327ae3dad5243b53fcb5f70 < b3aa1e9509e1b0a863353356d617fb45d1b6250aaffected
LinuxLinux98a2766493589c18c327ae3dad5243b53fcb5f70 < b4eb6a056b441ba0caedfbfc42cec501acf12f67affected
LinuxLinux98a2766493589c18c327ae3dad5243b53fcb5f70 < 831c29a12d560f8a3225f43050b3fbb5dfd79c66affected
LinuxLinux3.7affected
LinuxLinux0 < 3.7unaffected
LinuxLinux6.12.109 <= 6.12.*unaffected
LinuxLinux6.18.50 <= 6.18.*unaffected
LinuxLinux7.2.4 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References