CVE-2024-49955 Information

Description

In the Linux kernel the following vulnerability has been resolved:

ACPI: battery: Fix possible crash when unregistering a battery hook

When a battery hook returns an error when adding a new battery then the battery hook is automatically unregistered. However the battery hook provider cannot know that so it will later call battery_hook_unregister() on the already unregistered battery hook resulting in a crash.

Fix this by using the list head to mark already unregistered battery hooks as already being unregistered so that they can be ignored by battery_hook_unregister().

Reference

https://git.kernel.org/stable/c/da964de4c18199e14b961b5b2e5e6570552a313c https://git.kernel.org/stable/c/07b98400cb0285a6348188aa8c5ec6a2ae0551f7 https://git.kernel.org/stable/c/ca1fb7942a287b40659cc79551a1de54a2c2e7d5 https://git.kernel.org/stable/c/ce31847f109c3a5b2abdd19d7bcaafaacfde53de https://git.kernel.org/stable/c/ca26e8eed9c1c6651f51f7fa38fe444f8573cd1b https://git.kernel.org/stable/c/9f469ef1c79dac7f9ac1518643a33703918f7e13 https://git.kernel.org/stable/c/76959aff14a0012ad6b984ec7686d163deccdc16