CVE-2026-90830 GNU Binutils Section Merge merge.c _bfd_write_merged_section null pointer dereference

What is CVE-2026-90830?

CVE-2026-90830 is a medium-severity 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 security vulnerability has been detected in GNU Binutils 2.47. Impacted is the function _bfd_write_merged_section of the file bfd/merge.c of the component Section Merge. The manipulation leads to null pointer dereference. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. 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-2026-90830?

It affects 1 product.

Products include Gnu Binutils.

How do I fix CVE-2026-90830?

No fix published yet.

Is CVE-2026-90830 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90830 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 DEBIAN-CVE-2026-90830, ECHO-8bcd-55c3-cda3, GHSA-4xpf-8h39-fxrf, UBUNTU-CVE-2026-90830.