CVE-2026-91781 GNU Binutils ELF Section elf64-x86-64.c elf_x86_64_common_section_index null pointer dereference

What is CVE-2026-91781?

CVE-2026-91781 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 vulnerability has been detected in GNU Binutils 2.47. Affected is the function elf_x86_64_common_section_index of the file bfd/elf64-x86-64.c of the component ELF Section Handler. The manipulation leads to null pointer dereference. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. Upgrading to version 2.48 is able to address this issue. The identifier of the patch is 7322e9bc30cb282575a701c307851fd3d66fee68. It is suggested to upgrade the affected component.

Weakness: CWE-476, CWE-404

Which versions are affected by CVE-2026-91781?

It affects 1 product.

Products include Gnu Binutils.

How do I fix CVE-2026-91781?

Upgrade to a fixed version.

Is CVE-2026-91781 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91781 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-103368, BELL-CVE-2026-91781, DEBIAN-CVE-2026-91781, ECHO-8cf4-a772-b7d9, GHSA-x33g-4rqc-v4wq, OESA-2026-4160 and 4 more.