Chris Mason

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** A vulnerability in the Linux kernel has been resolved, related to the freeing of kfence objects. The issue occurred when the freeing of these objects was moved from deep inside `do slab free` to the wrapper functions outside, but unfortunately, it missed one spot in ` kmem cache free bulk`. This results in a crash, with a padding overwritten error. The crash is related to the `skbuff head cache` and involves functions such as `slab err`, `free to partial list`, `slab pad check`, `check slab`, `kmem cache alloc bulk`, and `napi build skb`. To avoid the crash, a `kfence free` check needs to be added in ` kmem cache free bulk`. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.