CVE-2026-110659 ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry
Attackers can crash applications using the ELFIO library by supplying a crafted ELF file with a dangling sh_link index, causing a null pointer dereference.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-110659?
CVE-2026-110659 is a medium-severity vulnerability in serge1 ELFIO, published on 14 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.
Weakness: CWE-476
Which versions are affected by CVE-2026-110659?
How do I fix CVE-2026-110659?
No fix has been published for CVE-2026-110659 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-110659 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-110659 exists.
Sources
Also known as AZL-108399, GHSA-78jh-26cf-3958.