CVE-2024-53099 Information

Description

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.

Reference

https://git.kernel.org/stable/c/8421d4c8762bd022cb491f2f0f7019ef51b4f0a7 https://git.kernel.org/stable/c/b3eb1b6a9f745d6941b345f0fae014dc8bb06d36 https://git.kernel.org/stable/c/d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d