CVE-2026-91781: NULL Pointer Dereference in GNU Binutils
CVE-2026-91781 is a medium severity vulnerability in GNU Binutils 2.47 involving a null pointer dereference in the ELF Section Handler function elf_x86_64_common_section_index. The issue requires local access to exploit and has been publicly disclosed. Upgrading to version 2.48 addresses the vulnerability.
AI Analysis
Technical Summary
This vulnerability affects GNU Binutils version 2.47 in the elf_x86_64_common_section_index function within the ELF Section Handler component (file bfd/elf64-x86-64.c). It causes a null pointer dereference when manipulated locally. The flaw has been publicly disclosed and an exploit may exist. The issue is resolved by upgrading to version 2.48, with the patch identified by commit 7322e9bc30cb282575a701c307851fd3d66fee68.
Potential Impact
The vulnerability allows a local attacker to cause a null pointer dereference, potentially leading to a denial of service or application crash. There is no indication of privilege escalation or remote exploitation. The CVSS 4.8 score reflects a medium impact with local attack vector and low complexity.
Mitigation Recommendations
Upgrade GNU Binutils to version 2.48, which contains the official fix for this vulnerability. No other mitigation is indicated or required.
CVE-2026-91781: NULL Pointer Dereference in GNU Binutils
Description
CVE-2026-91781 is a medium severity vulnerability in GNU Binutils 2.47 involving a null pointer dereference in the ELF Section Handler function elf_x86_64_common_section_index. The issue requires local access to exploit and has been publicly disclosed. Upgrading to version 2.48 addresses the vulnerability.
CVSS v4.0
Score 4.8medium
Affected software
GNU
Binutils
cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects GNU Binutils version 2.47 in the elf_x86_64_common_section_index function within the ELF Section Handler component (file bfd/elf64-x86-64.c). It causes a null pointer dereference when manipulated locally. The flaw has been publicly disclosed and an exploit may exist. The issue is resolved by upgrading to version 2.48, with the patch identified by commit 7322e9bc30cb282575a701c307851fd3d66fee68.
Potential Impact
The vulnerability allows a local attacker to cause a null pointer dereference, potentially leading to a denial of service or application crash. There is no indication of privilege escalation or remote exploitation. The CVSS 4.8 score reflects a medium impact with local attack vector and low complexity.
Mitigation Recommendations
Upgrade GNU Binutils to version 2.48, which contains the official fix for this vulnerability. No other mitigation is indicated or required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-09-15T02:01:16.001Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa9098d55bf5e2cf58f90f5
Added to database: 09/15/2026, 09:02:05 UTC
Last enriched: 09/15/2026, 09:16:48 UTC
Last updated: 09/15/2026, 09:21:25 UTC
Views: 5
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