In the Linux kernel, the following vulnerability has been resolved:
power: supply: pm8916_lbc: Fix use-after-free in power_supply_changed()
Using the `devm_` variant for requesting IRQ _before_ the `devm_`
variant for allocating/registering the `power_supply` handle, means that
the `power_supply` 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 `power_supply`
handle has been freed, *but* just _before_ the corresponding
unregistration of the IRQ handler has run.
This will lead to the IRQ handler calling `power_supply_changed()` with
a freed `power_supply` handle. Which usually crashes the system or
otherwise silently corrupts the memory...
Note that there is a similar situation which can also happen during
`probe()`; the possibility of an interrupt firing _before_ registering
the `power_supply` handle. This would then lead to the nasty situation
of using the `power_supply` handle *uninitialized* in
`power_supply_changed()`.
Fix this racy use-after-free by making sure the IRQ is requested _after_
the registration of the `power_supply` handle.
References
Configurations
Configuration 1 (hide)
|
History
24 Jun 2026, 17:09
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-416 | |
| First Time |
Linux linux Kernel
Linux |
|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| References | () https://git.kernel.org/stable/c/08e674e9862a2db46fb234eb7c5442455ece0131 - Patch | |
| References | () https://git.kernel.org/stable/c/b7508129978ae1e2ed9b0410396abc05def9c4eb - Patch | |
| References | () https://git.kernel.org/stable/c/d7d31fc99d248d5f47588f50dce5c7599c991c6a - Patch | |
| References | () https://git.kernel.org/stable/c/dbe579e620ef0f53db490ec79a8566e4ea8918ac - Patch |
27 May 2026, 14:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-27 14:17
Updated : 2026-06-24 17:09
NVD link : CVE-2026-45938
Mitre link : CVE-2026-45938
CVE.ORG link : CVE-2026-45938
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free