CVE-2025-11495

GNU Binutils Linker elf64-x86-64.c elf_x86_64_relocate_section heap-based overflow

State: Published
Severity: 4.8 Medium
Published: Oct 8, 2025
Updated: Oct 15, 2026
Reserved: Oct 8, 2025

Description

A vulnerability was determined in GNU Binutils 2.45. The affected element is the function elf_x86_64_relocate_section of the file elf64-x86-64.c of the component Linker. This manipulation causes heap-based buffer overflow. The attack can only be executed locally. The exploit has been publicly disclosed and may be utilized. Patch name: 6b21c8b2ecfef5c95142cbc2c32f185cb1c26ab0. To fix this issue, it is recommended to deploy a patch.

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-122 Heap-based Buffer Overflow
CWE-119 Memory Corruption

Affected Products

Product	Versions
BinutilsGNU	2.45Affected

References

VDB-327620 | GNU Binutils Linker elf64-x86-64.c elf_x86_64_relocate_section heap-based overflowvdb-entrytechnical-description
VDB-327620 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
Submit #668290 | GNU Binutils 2.45 Heap-based Buffer Overflowthird-party-advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=33502issue-tracking
https://sourceware.org/bugzilla/show_bug.cgi?id=33502#c3issue-tracking
https://sourceware.org/bugzilla/attachment.cgi?id=16393exploit
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6b21c8b2ecfef5c95142cbc2c32f185cb1c26ab0patch
https://www.gnu.org/product
https://cert-portal.siemens.com/productcert/html/ssa-082556.html

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