VDB-404053 · Submit #933335 · CVE-2026-91782

GNU Binutils 2.47 Dynamic Relocation Allocation bfd/elfxx-x86.c elf_x86_allocate_dynrelocs null pointer dereference

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.0	$0-$5k	2.25

Summaryinfo

A vulnerability classified as problematic has been found in GNU Binutils 2.47. Affected by this issue is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. This manipulation causes null pointer dereference. This vulnerability appears as CVE-2026-91782. The attack requires local access. In addition, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU Binutils 2.47. It has been declared as problematic. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability.

The advisory is shared at sourceware.org. This vulnerability is known as CVE-2026-91782. The exploitation appears to be easy. An attack has to be approached locally. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 2.48 eliminates this vulnerability. Applying the patch d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-78335). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Programming Tool Software

Vendor

Name

Binutils

Version

2.47

License

open-source

Website

Vendor: https://www.gnu.org/

CPE 2.3info

🔒

CPE 2.2info

🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Binutils 2.48
Patch: d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40

Timelineinfo

09/15/2026 Advisory disclosed
09/15/2026 +0 days VulDB entry created
09/15/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: gnu.org

Advisory: 34448
Status: Confirmed

CVE: CVE-2026-91782 (🔒)
GCVE (CVE): GCVE-0-2026-91782
GCVE (VulDB): GCVE-100-404053
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/15/2026 04:06
Updated: 09/15/2026 12:48
Changes: 09/15/2026 04:06 (62), 09/15/2026 12:48 (1)
Complete: 🔍
Submitter: Ech06
Cache ID: 216::103

Submitinfo

Accepted

Submit #933335: GNU GNU Binutils binutils 2.47 NULL Pointer Dereference (by Ech06)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.