CVE-2025-11082

What it actually does

Heap-based buffer overflow in the _bfd_elf_parse_eh_frame function of bfd/elf-eh-frame.c within the GNU Binutils linker component.

Why it matters to the business

Local memory corruption in build and linking processes can cause application crashes, data integrity issues, or limited code execution, increasing operational risk for organizations relying on affected versions in development pipelines; low EPSS and no KEV status indicate limited widespread urgency but published exploit raises patching priority.

How an attack unfolds

An attacker with local access supplies crafted ELF input to the vulnerable linker function, triggering the heap overflow during exception frame parsing; the published exploit demonstrates memory corruption that may be leveraged for further local impact.

How to fix it

Apply the patch ea1a0737c7692737a644af0486b71e4a392cbca8 or upgrade to GNU Binutils 2.46; for github.com/oauth2-proxy/oauth2-proxy/v7 upgrade to version 7.11.0.

How to confirm the fix worked

Verify the installed Binutils version is 2.46 or later and confirm the patch commit is present in the source; test builds with known edge-case ELF inputs to ensure no overflow occurs.

Typical attack path

1. Gain local execution rights on a host using vulnerable Binutils
2. Prepare malicious input targeting the ELF EH frame parser
3. Invoke the linker or build process with the crafted input
4. Trigger heap buffer overflow to achieve memory corruption

How to detect it

Review build logs and process execution records for abnormal linker terminations or memory-related errors when processing ELF files; no widespread threat actor activity reported.

What your security team should do

• Prioritize upgrade of Binutils in all build environments within standard change windows
• Scan dependency trees for any indirect use of affected Binutils components
• Monitor for new public exploit code and update local detection rules accordingly