CVE-2026-46246

HIGH

power: supply: pm8916_lbc: Fix use-after-free for extcon in IRQ handler

Title source: cna
STIX 2.1

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.

Scores

CVSS v3 7.8
EPSS 0.0013
EPSS Percentile 2.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (11)
Linux/Linux < 6.7
Linux/Linux 6.12.75 - 6.12.*
Linux/Linux 6.18.14 - 6.18.*
Linux/Linux 6.19.4 - 6.19.*
Linux/Linux 6.7
Linux/Linux 7.0
Linux/Linux f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 - 23067259919663580c6f81801847cfc7bd54fd1f
Linux/Linux f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 - 47abfc207ab02cf1297257e282e8048da63f0d08
Linux/Linux f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 - 48e0f68b50c344bb2d78d65dd98f93e41276ee00
Linux/Linux f8d7a3d21160a0cab4d15b81231f2a76b0fcee13 - 9fab0120907e6965168e55b1e17cb9dfaf262b86
... and 1 more
Published Jun 03, 2026
Tracked Since Jun 03, 2026