Vulnerability CVE-2024-36918
Published: 2024-05-30

Description:
In the Linux kernel, the following vulnerability has been resolved:

bpf: Check bloom filter map value size

This patch adds a missing check to bloom filter creating, rejecting
values above KMALLOC_MAX_SIZE. This brings the bloom map in line with
many other map types.

The lack of this protection can cause kernel crashes for value sizes
that overflow int's. Such a crash was caught by syzkaller. The next
patch adds more guard-rails at a lower level.

 References:
https://git.kernel.org/stable/c/fa6995eeb62e74b5a1480c73fb7b420c270784d3
https://git.kernel.org/stable/c/608e13706c8b6c658a0646f09ebced74ec367f7c
https://git.kernel.org/stable/c/c418afb9bf23e2f2b76cb819601e4a5d9dbab42d
https://git.kernel.org/stable/c/a8d89feba7e54e691ca7c4efc2a6264fa83f3687
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