CVE-2026-91779 GNU Binutils Eh Frame elf-eh-frame.c _bfd_elf_eh_frame_section_offset null pointer dereference

Medium 4.8 Published 15 Sep 2026 Updated 15 Sep 2026

A local attacker can cause a denial of service in GNU Binutils via a null pointer dereference in the Eh Frame Handler.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-91779?

CVE-2026-91779 is a medium-severity vulnerability in Gnu Binutils, published on 15 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A security flaw has been discovered in GNU Binutils 2.47. This affects the function _bfd_elf_eh_frame_section_offset of the file bfd/elf-eh-frame.c of the component Eh Frame Handler. Performing a manipulation results in null pointer dereference. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through a bug report but has not responded yet.

Weakness: CWE-476, CWE-404

Which versions are affected by CVE-2026-91779?

It affects 1 product.

Products include Gnu Binutils.

How do I fix CVE-2026-91779?

No fix published yet.

Is CVE-2026-91779 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91779 exists.

All Gnu Binutils vulnerabilities

Sources

Also known as AZL-103371, DEBIAN-CVE-2026-91779, ECHO-fafa-e922-a390, GHSA-9ww6-c2m6-3277, UBUNTU-CVE-2026-91779.