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.
References
Configurations
Configuration 1 (hide)
|
History
09 Jun 2026, 20:36
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/23067259919663580c6f81801847cfc7bd54fd1f - Patch | |
| References | () https://git.kernel.org/stable/c/47abfc207ab02cf1297257e282e8048da63f0d08 - Patch | |
| References | () https://git.kernel.org/stable/c/48e0f68b50c344bb2d78d65dd98f93e41276ee00 - Patch | |
| References | () https://git.kernel.org/stable/c/9fab0120907e6965168e55b1e17cb9dfaf262b86 - Patch | |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-416 | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
03 Jun 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-03 18:16
Updated : 2026-06-09 20:36
NVD link : CVE-2026-46246
Mitre link : CVE-2026-46246
CVE.ORG link : CVE-2026-46246
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free