CVE-2023-52520 Information

Description

In the Linux kernel the following vulnerability has been resolved:

platform/x86: think-lmi: Fix reference leak

If a duplicate attribute is found using kset_find_obj() a reference to that attribute is returned which needs to be disposed accordingly using kobject_put(). Move the setting name validation into a separate function to allow for this change without having to duplicate the cleanup code for this setting. As a side note a very similar bug was fixed in commit 7295a996fdab (\platform/x86: dell-sysman: Fix reference leak) so it seems that the bug was copied from that driver.

Compile-tested only.

Reference

https://git.kernel.org/stable/c/124cf0ea4b82e1444ec8c7420af4e7db5558c293 https://git.kernel.org/stable/c/af21c9119a37cecb7ff27ce0c2f3cf721e9d0ec4 https://git.kernel.org/stable/c/c6e3023579de8d33256771ac0745239029e81106 https://git.kernel.org/stable/c/528ab3e605cabf2f9c9bd5944d3bfe15f6e94f81