In the Linux kernel, the following vulnerability has been resolved: bpf: Check validity of link->type in bpf_link_show_fdinfo() If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing bpf_link_type_strs[link->type] may result in an out-of-bounds access. To spot such missed invocations early in the future, checking the validity of link->type in bpf_link_show_fdinfo() and emitting a warning when such invocations are missed.
https://git.kernel.org/stable/c/d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d
https://git.kernel.org/stable/c/b3eb1b6a9f745d6941b345f0fae014dc8bb06d36
https://git.kernel.org/stable/c/8421d4c8762bd022cb491f2f0f7019ef51b4f0a7
https://git.kernel.org/stable/c/79f87a6ec39fb5968049a6775a528bf58b25c20a
https://git.kernel.org/stable/c/4e8074bb33d18f56af30a0252cb3606d27eb1c13
https://git.kernel.org/stable/c/24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d