CVE-2026-90803

GNU Binutils ld elf64-x86-64.c elf_x86_64_relocate_section buffer overflow

State: Published
Severity: 4.8 Medium
Published: Sep 14, 2026
Updated: Sep 14, 2026
Reserved: Sep 13, 2026

Description

A security vulnerability has been detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_64_relocate_section of the file bfd/elf64-x86-64.c of the component ld. Such manipulation of the argument roff leads to buffer overflow. An attack has to be approached locally. The exploit has been disclosed publicly and may be used. Upgrading to version 2.48 addresses this issue. The name of the patch is 471130b39c03623ec6d78ece377ff4da3f6bfe7b. It is recommended to upgrade the affected component.

Scores

CVSS	Score	Vector	Source
4.0	4.8 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	5.3 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
3.0	5.3 Medium	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
2.0	4.3 Medium	AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-120 Buffer Overflow
CWE-119 Memory Corruption

Affected Products

Product	Versions
BinutilsGNU	2.47Affected 2.48Not affected

References

VDB-403305 | GNU Binutils ld elf64-x86-64.c elf_x86_64_relocate_section buffer overflowvdb-entrytechnical-description
VDB-403305 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-90803 | CVE Analysis and Reportthird-party-advisory
Submit #920280 | GNU Binutils 2.47 (version date 20260726) Heap-based Buffer Overflowthird-party-advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=34444issue-tracking
https://github.com/r1ck9-2q/cve_summit/blob/main/Heap%20OOB%20readwrite%20and%20SEGV%20in%20%60elf_x86_64_relocate_section%60%20(bfdelf64-x86-64.c4530%20%204835)%20via%20malformed%20relocation.mdexploit
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=471130b39c03623ec6d78ece377ff4da3f6bfe7bpatch
https://www.gnu.org/broken-linkproduct

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