CVE-2025-11083: GNU Binutils Linker elfcode.h elf_swap_shdr heap-based overflow

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-09-27 · updated 2026-10-09
Weakness: CWE-119

Description

A vulnerability has been found in GNU Binutils 2.45. The affected element is the function elf_swap_shdr in the library bfd/elfcode.h of the component Linker. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The identifier of the patch is 9ca499644a21ceb3f946d1c179c38a83be084490. To fix this issue, it is recommended to deploy a patch. The code maintainer replied with "[f]ixed for 2.46".

Affected products

GNU Binutils: 2.45

References

https://sourceware.org/bugzilla/attachment.cgi?id=16353
https://sourceware.org/bugzilla/show_bug.cgi?id=33457
https://sourceware.org/bugzilla/show_bug.cgi?id=33457#c1
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9ca499644a21ceb3f946d1c179c38a83be084490
https://vuldb.com/?ctiid.326124
https://vuldb.com/?id.326124
https://vuldb.com/?submit.661277
https://www.gnu.org/
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
https://sourceware.org/bugzilla/show_bug.cgi?id=33457
https://sourceware.org/bugzilla/show_bug.cgi?id=33457#c1

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