CVE-2023-49937 Use after free in n/a

Critical 9.8 Published 14 Dec 2023 Updated 4 Nov 2025

Attackers can trigger a double free in Slurm to cause denial of service or execute arbitrary code, requiring an upgrade to patched versions.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2023-49937?

CVE-2023-49937 is a critical use after free vulnerability in n/a, published on 14 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in SchedMD Slurm 22.05.x, 23.02.x, and 23.11.x. Because of a double free, attackers can cause a denial of service or possibly execute arbitrary code. The fixed versions are 22.05.11, 23.02.7, and 23.11.1.

Weakness: CWE-415

Which versions are affected by CVE-2023-49937?

It affects 1 product.

Products include Schedmd Slurm.

How do I fix CVE-2023-49937?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2023-49937 being exploited?

There is no known exploitation of CVE-2023-49937 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2023-49937, GHSA-crjm-8w39-c276, UBUNTU-CVE-2023-49937.