CVE-2025-1153

What it actually does

The bfd_set_format function in format.c performs unsafe operations on file format structures, resulting in memory corruption when processing specially crafted inputs.

Why it matters to the business

Organizations relying on Binutils for build pipelines, reverse engineering, or binary analysis face risk of tool crashes or unpredictable behavior when handling untrusted files, potentially disrupting development workflows and requiring emergency upgrades.

How an attack unfolds

An attacker crafts a malformed binary file that triggers the vulnerable bfd_set_format path; when a user or automated process invokes a Binutils utility on the file, memory corruption occurs. Exploitation requires precise control over memory layout and is considered difficult due to high attack complexity.

How to fix it

Upgrade GNU Binutils to version 2.45. The fix is identified by commit 8d97c1a53f3dc9fd8e1ccdb039b8a33d50133150. Rebuild any dependent packages against the patched version and verify the update via package manager or source compilation.

How to confirm the fix worked

Confirm the installed version reports 2.45 or later. Test by processing known-good and boundary-case binary files with affected utilities and monitor for crashes or sanitizer violations. Review build logs for the patch commit identifier.

Typical attack path

1. Identify or generate a malformed input file targeting the bfd_set_format code path
2. Deliver the file to a system running vulnerable GNU Binutils 2.43 or 2.44
3. Trigger processing via objdump, readelf, ld, or similar utilities
4. Achieve memory corruption leading to denial of service or, with additional effort, limited code execution

How to detect it

Review process execution logs for Binutils utilities crashing on specific files. Look for segmentation faults or heap corruption signals in system logs when objdump, readelf, or ld process untrusted inputs. Correlate file access timestamps with utility invocations.

What your security team should do

• Prioritize upgrade of all Binutils instances to 2.45 within development and CI/CD environments
• Scan source and binary repositories for references to vulnerable versions
• Add memory-safety tooling such as ASAN or Valgrind to build pipelines until upgrade is complete
• Monitor for new public exploits given the low EPSS score and absence from KEV