CVE-2026-90801 GNU Binutils ld cache.c cache_bwrite buffer overflow
A buffer overflow in the GNU Binutils linker allows local attackers to execute arbitrary code or cause a denial of service via crafted input.
- 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-2026-90801?
CVE-2026-90801 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 security flaw has been discovered in GNU Binutils 2.47. This impacts the function cache_bwrite of the file bfd/cache.c of the component ld. The manipulation of the argument nbytes results in buffer overflow. The attack requires a local approach. 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.
Which versions are affected by CVE-2026-90801?
It affects 1 product.
Products include Gnu Binutils.
How do I fix CVE-2026-90801?
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-2026-90801 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90801 exists.
Other vulnerabilities in Gnu Binutils
Sources
Also known as AZL-108066, DEBIAN-CVE-2026-90801, ECHO-4460-02b4-39bb, GHSA-x22q-2wh5-h6hv, UBUNTU-CVE-2026-90801.