CVE-2026-46246

High

Description

In the Linux kernel, the following vulnerability has been resolved: power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler Using the `devm_` variant for requesting IRQ _before_ the `devm_` variant for allocating/registering the `extcon` handle, means that the `extcon` handle will be deallocated/unregistered _before_ the interrupt handler (since `devm_` naturally deallocates in reverse allocation order). This means that during removal, there is a race condition where an interrupt can fire just _after_ the `extcon` handle has been freed, *but* just _before_ the corresponding unregistration of the IRQ handler has run. This will lead to the IRQ handler calling `extcon_set_state_sync()` with a freed `extcon` handle. Which usually crashes the system or otherwise silently corrupts the memory... Fix this racy use-after-free by making sure the IRQ is requested _after_ the registration of the `extcon` handle.

SeverityHigh
CVSS7.8
Exploit probability—
ProductLinux Kernel
PublishedJun 3, 2026
First seenJun 3, 2026

How to fix

Update
  • linux linux_kernel6.12.75, 6.18.14, 6.19.4 or later

Affected products

ProductAffected versionsFixed in
linux linux_kernel6.7 ≤ v < 6.12.75, 6.13 ≤ v < 6.18.14, 6.19 ≤ v < 6.19.46.12.75, 6.18.14, 6.19.4

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