GNU Binutils 2.47 ELF Section bfd/elf64-x86-64.c elf_x86_64_common_section_index null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k1.34

Summaryinfo

A vulnerability described as problematic has been identified in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_64_common_section_index of the file bfd/elf64-x86-64.c of the component ELF Section Handler. The manipulation results in null pointer dereference. This vulnerability is reported as CVE-2026-91781. The attack requires a local approach. Moreover, an exploit is present. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in GNU Binutils 2.47. It has been classified as problematic. Affected is the function elf_x86_64_common_section_index of the file bfd/elf64-x86-64.c of the component ELF Section Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability.

The advisory is shared for download at sourceware.org. This vulnerability is traded as CVE-2026-91781. The exploitability is told to be easy. The attack needs to be approached locally. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept.

Upgrading to version 2.48 eliminates this vulnerability. Applying the patch 7322e9bc30cb282575a701c307851fd3d66fee68 is able to eliminate this problem. The bugfix is ready for download at sourceware.org. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Binutils 2.48
Patch: 7322e9bc30cb282575a701c307851fd3d66fee68

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: 34449
Status: Confirmed

CVE: CVE-2026-91781 (🔒)
GCVE (CVE): GCVE-0-2026-91781
GCVE (VulDB): GCVE-100-404052
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/15/2026 04:06
Changes: 09/15/2026 04:06 (63)
Complete: 🔍
Submitter: Ech06
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #933336: GNU GNU Binutils binutils 2.47 NULL Pointer Dereference (by Ech06)

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