In the Linux kernel, the following vulnerability has been resolved:
power: supply: sbs-battery: 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. Keep the old behavior of
just printing a warning in case of any failures during the IRQ request
and finishing the probe successfully.
References
Configurations
Configuration 1 (hide)
|
History
24 Jun 2026, 17:23
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-416 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| References | () https://git.kernel.org/stable/c/14d4dee5d8fb361bfff275832087254beab66d72 - Patch | |
| References | () https://git.kernel.org/stable/c/2078830c32d1e49ac942c6f8c21f35c806ae5e94 - Patch | |
| References | () https://git.kernel.org/stable/c/8010b745b436c3e1ca5dd960aa29fa3e0f6d8841 - Patch | |
| References | () https://git.kernel.org/stable/c/82d3eb97a976c9d56bb92b241397610e57a9c629 - Patch | |
| References | () https://git.kernel.org/stable/c/861dda7a9074c0ff67788928165ae39d7f647491 - Patch | |
| References | () https://git.kernel.org/stable/c/8d59cf3887fbabacef53bfba473e33e8a8d9d07b - Patch | |
| References | () https://git.kernel.org/stable/c/ca7dd71773e4e050b0fb98768b7eae60f8d1f38b - Patch | |
| References | () https://git.kernel.org/stable/c/f1f472b14ad56104ba228b8fbec60d5b21829913 - Patch |
27 May 2026, 14:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-27 14:17
Updated : 2026-06-24 17:23
NVD link : CVE-2026-45916
Mitre link : CVE-2026-45916
CVE.ORG link : CVE-2026-45916
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free