In the Linux kernel, the following vulnerability has been resolved:
power: supply: rt9455: 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
09 Jun 2026, 19:52
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-416 | |
| References | () https://git.kernel.org/stable/c/2178dc65d45e2f7bcaa8af8d80d100419bdab251 - Patch | |
| References | () https://git.kernel.org/stable/c/62d753b916bd500bb269b7078cdab73198ab4718 - Patch | |
| References | () https://git.kernel.org/stable/c/64e15155095f39f4dec9b4659da1238ef8fc54d4 - Patch | |
| References | () https://git.kernel.org/stable/c/721449a15170fc5f028a7576d7f65b9f60d53482 - Patch | |
| References | () https://git.kernel.org/stable/c/a39f8f06216f73ef40e71e2fe4ad071964c1fd36 - Patch | |
| References | () https://git.kernel.org/stable/c/af261f218a7606f93d2c786353d60bb4feb56ef0 - Patch | |
| References | () https://git.kernel.org/stable/c/d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfc - Patch | |
| References | () https://git.kernel.org/stable/c/e2febe375e5ea5afed92f4cd9711bde8f24ee6d2 - Patch |
05 Jun 2026, 07:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 8.4 |
03 Jun 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-03 18:16
Updated : 2026-06-09 19:52
NVD link : CVE-2026-46270
Mitre link : CVE-2026-46270
CVE.ORG link : CVE-2026-46270
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free