CVE-2024-36918

2024-05-3016:15:15

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

linux kernel

vulnerability

bloom filter

map

value size

kmalloc_max_size

kernel crashes

syzkaller

guard-rails

6.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

JSON

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.