Null Pointer Dereference in GNU Binutils Affects Dynamic Relocation Allocation
CVE-2026-91782

4.8MEDIUM

Key Information:

Vendor

Gnu
Status
Binutils
Vendor
CVE Published:
15 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-91782?

A vulnerability exists in the GNU Binutils 2.47 specifically within the Dynamic Relocation Allocation component found in the elf_x86_allocate_dynrelocs function. This issue leads to a null pointer dereference, which can be exploited locally. The exploit is publicly known, and it is crucial to upgrade to version 2.48 to mitigate this risk. The corresponding patch addresses the vulnerability, ensuring safer operation of the affected component.

Affected Version(s)

Binutils 2.47

Binutils 2.48

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-91782 - Proof of Concept

References

https://vuldb.com/vuln/404053
vdb-entrytechnical-description
https://vuldb.com/vuln/404053/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-91782
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ech06 (VulDB User)
.