CVE-2024-36918 bpf: Check bloom filter map value size

What is CVE-2024-36918?

CVE-2024-36918 is a high-severity vulnerability in Linux kernel, published on 30 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-190

Which versions are affected by CVE-2024-36918?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-36918?

Apply the vendor's patch.

Is CVE-2024-36918 being exploited?

There is no known exploitation of CVE-2024-36918 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• How this page is made

Also known as BELL-CVE-2024-36918, DEBIAN-CVE-2024-36918, ROOT-OS-UBUNTU-2204-CVE-2024-36918, UBUNTU-CVE-2024-36918.