CVE-2026-91782

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

State: Published
Severity: 4.8 Medium
Published: Sep 15, 2026
Updated: Sep 17, 2026
Reserved: Sep 15, 2026

Description

A vulnerability was detected in GNU Binutils 2.47. 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 results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Scores

CVSS	Score	Vector	Source
4.0	4.8 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	3.3 Low	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
3.0	3.3 Low	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
2.0	1.7 Low	AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-476 NULL Pointer Dereference
CWE-404 Denial of Service

Affected Products

Product	Versions
BinutilsGNU	2.47Affected 2.48Not affected

References

VDB-404053 | GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x86_allocate_dynrelocs null pointer dereferencevdb-entrytechnical-description
VDB-404053 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-91782 | CVE Analysis and Reportthird-party-advisory
Submit #933335 | GNU GNU Binutils binutils 2.47 NULL Pointer Dereferencethird-party-advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=34448broken-linkissue-tracking
https://github.com/Ech06/CVE_submit/tree/main/bugzilla/pocs/34448exploit
https://www.gnu.org/broken-linkproduct

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