CVE-2026-91780 GNU Binutils elflink.c elf_link_add_object_symbols null pointer dereference

What is CVE-2026-91780?

CVE-2026-91780 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 weakness has been identified in GNU Binutils 2.47. This impacts the function elf_link_add_object_symbols of the file bfd/elflink.c. Executing a manipulation can lead to null pointer dereference. The attack needs to be launched locally. The exploit has been made available to the public and could 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-2026-91780?

It affects 1 product.

Products include Gnu Binutils.

How do I fix CVE-2026-91780?

No fix published yet.

Is CVE-2026-91780 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91780 exists.

Other vulnerabilities in Gnu Binutils

• CVE-2017-7614 Null dereference in n/a Critical 9.8
• CVE-2014-9939 Memory corruption in n/a Critical 9.8
• CVE-2017-7226 Information disclosure in n/a Critical 9.1
• CVE-2017-6969 Information disclosure in n/a Critical 9.1
• CVE-2020-19726 Denial of service in n/a High 8.8

All Gnu Binutils vulnerabilities

Sources

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

Also known as AZL-103373, DEBIAN-CVE-2026-91780, ECHO-f062-4469-bc5f, GHSA-9vhp-r9qm-xf9x, UBUNTU-CVE-2026-91780.