In the Linux kernel, the following vulnerability has been resolved:
power: supply: act8945a: 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
25 Jun 2026, 21:06
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/0768e8525a46df103647ca5059b32320d7fd17e4 - Patch | |
| References | () https://git.kernel.org/stable/c/3291c51d4684d048dd2eb91b5b65fcfdaf72141f - Patch | |
| References | () https://git.kernel.org/stable/c/697bb5dc0cb4791e244f3970b067bc1ef33be9d9 - Patch | |
| References | () https://git.kernel.org/stable/c/76a42ba547a9b2e2337894f67a4d9247445007d5 - Patch | |
| References | () https://git.kernel.org/stable/c/83c1bd466c514cb24ca6ef347c5aac76a13c4e1e - Patch | |
| References | () https://git.kernel.org/stable/c/d023ef9f748b2090f7a9dbdd5c622b6ad99088ea - Patch | |
| References | () https://git.kernel.org/stable/c/f27eb76def5c07e4d7cc468b40741f19dafc83ce - Patch | |
| References | () https://git.kernel.org/stable/c/f2a0777b1e5a3cee1712c4d3e9095c0df8fc8cb3 - Patch | |
| First Time |
Linux linux Kernel
Linux |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| CWE | CWE-416 | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
27 May 2026, 14:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-27 14:17
Updated : 2026-06-25 21:06
NVD link : CVE-2026-45867
Mitre link : CVE-2026-45867
CVE.ORG link : CVE-2026-45867
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free