CVE-2023-38665 Null dereference in n/a
Attackers can cause a denial of service via null pointer dereference in the NASM assembler's ieee_write_file function.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-38665?
CVE-2023-38665 is a medium-severity vulnerability in Nasm Netwide Assembler, published on 22 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Null pointer dereference in ieee_write_file in nasm 2.16rc0 allows attackers to cause a denial of service (crash).
Weakness: CWE-476
Which versions are affected by CVE-2023-38665?
It affects 1 product.
Products include Nasm Netwide Assembler.
How do I fix CVE-2023-38665?
Upgrade to a fixed version.
Is CVE-2023-38665 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-38665 exists.
Other vulnerabilities in Nasm Netwide Assembler
Sources
Also known as AZL-28623, AZL-35021, BELL-CVE-2023-38665, DEBIAN-CVE-2023-38665, GHSA-5w3h-rpvh-26gv, OESA-2025-1584 and 3 more.