CVE-2026-90831 GNU Binutils ELF String Table elf-strtab.c _bfd_elf_strtab_delref memory corruption

Medium 4.8 Published 14 Sep 2026 Updated 16 Sep 2026

A local attacker can exploit memory corruption in GNU Binutils ELF string table handling to potentially execute code or cause denial of service.

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-2026-90831?

CVE-2026-90831 is a medium-severity memory corruption vulnerability in Gnu Binutils, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability was detected in GNU Binutils 2.47. The affected element is the function _bfd_elf_strtab_delref of the file bfd/elf-strtab.c of the component ELF String Table. The manipulation results in memory corruption. The attack requires a local approach. The exploit is now public and may be used. The project was informed of the problem early through a bug report but has not responded yet.

Weakness: CWE-119

Which versions are affected by CVE-2026-90831?

It affects 1 product.

Products include Gnu Binutils.

How do I fix CVE-2026-90831?

No fix published yet.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-90831 being exploited?

There is no known exploitation of CVE-2026-90831 in the wild and no public exploit code.

All Gnu Binutils vulnerabilities

Sources

Also known as AZL-108063, DEBIAN-CVE-2026-90831, ECHO-f286-1322-f7b5, GHSA-fjw7-r654-jjmq, UBUNTU-CVE-2026-90831.