In the Linux kernel, the following vulnerability has been resolved:
power: supply: bq25980: 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, 21:12
| 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/03d1e4ee4e6aa6d2966e883e4ca0e5be73bf1b7c - Patch | |
| References | () https://git.kernel.org/stable/c/0560a4b09c92e2ecaa883965cf6f9ca51c158ff9 - Patch | |
| References | () https://git.kernel.org/stable/c/0de95d29d847c6217b7d5845e24a71a4aee7b359 - Patch | |
| References | () https://git.kernel.org/stable/c/16875e3b7bc9e59bfa0acaf1e43f275a6f42a30f - Patch | |
| References | () https://git.kernel.org/stable/c/4aeaf03c17260415c2fdd55992f9ad4188d5455a - Patch | |
| References | () https://git.kernel.org/stable/c/5f0b1cb41906e86b64bf69f5ededb83b0d757c27 - Patch | |
| References | () https://git.kernel.org/stable/c/86f93dfb23f5bf4f285c4256a7e909d222f7de56 - Patch | |
| References | () https://git.kernel.org/stable/c/abea607ff2f62f4c0a5fb29f7fbdaaab163276a4 - Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
27 May 2026, 14:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-27 14:17
Updated : 2026-06-25 21:12
NVD link : CVE-2026-45879
Mitre link : CVE-2026-45879
CVE.ORG link : CVE-2026-45879
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free