CVE-2023-26916 Null dereference in n/a

Medium 5.3 Published 3 Apr 2023 Updated 18 Feb 2025

A NULL pointer dereference in libyang allows attackers to cause a denial of service via crafted input to lys_parse_mem.

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

What is CVE-2023-26916?

CVE-2023-26916 is a medium-severity vulnerability in Fedoraproject Fedora, published on 3 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

libyang from v2.0.164 to v2.1.30 was discovered to contain a NULL pointer dereference via the function lys_parse_mem at lys_parse_mem.c.

Weakness: CWE-476

Which versions are affected by CVE-2023-26916?

It affects 2 products.

Products include Cesnet Libyang, Fedoraproject Fedora.

How do I fix CVE-2023-26916?

Upgrade to a fixed version.

Is CVE-2023-26916 being exploited?

There is no known exploitation of CVE-2023-26916 in the wild and no public exploit code.

All Fedoraproject Fedora vulnerabilities

Sources

Also known as AZL-25966, DEBIAN-CVE-2023-26916, GHSA-rgjq-f6gr-756j, UBUNTU-CVE-2023-26916, openSUSE-SU-2024:12836-1.