In the Linux kernel, the following vulnerability has been resolved: Revert "kobject: Remove redundant checks for whether ktype is NULL" This reverts commit 1b28cb81dab7c1eedc6034206f4e8d644046ad31. It is reported to cause problems, so revert it for now until the root cause can be found.
https://git.kernel.org/stable/c/b746d52ce7bcac325a2fa264216ead85b7fbbfaa
https://git.kernel.org/stable/c/7f414d306320f837cc3df96cf52161cb8290fb1b
https://git.kernel.org/stable/c/3ca8fbabcceb8bfe44f7f50640092fd8f1de375c