CVE-2025-11082

Vulnerability

CVE-2025-11082 is a heap-based buffer overflow vulnerability in GNU Binutils 2.45, specifically in the _bfd_elf_parse_eh_frame function within bfd/elf-eh-frame.c. The flaw resides in the linker component and can be triggered by processing a crafted ELF object file with malformed exception-handling frame data. The root cause is insufficient bounds checking when parsing the .eh_frame section, leading to a write past the allocated heap buffer boundary [1].

Exploitation

Exploitation requires local access to the system; the attacker must supply a specially crafted ELF file to the linker (e.g., during compilation or static linking). No authentication is needed beyond the ability to invoke the linker on the malicious input. The attack surface is limited to local execution, but the exploit has been published, lowering the barrier for potential attackers [1].

Impact

Successful exploitation can cause a heap-based buffer overflow, potentially leading to a crash (denial of service) or arbitrary code execution in the context of the linker process. This could allow an attacker to compromise the build environment or escalate privileges if the linker is invoked with elevated permissions [1].

Mitigation

The maintainer has confirmed the fix for Binutils 2.46, and a specific patch (commit ea1a0737c7692737a644af0486b71e4a392cbca8) is available. Users of Binutils 2.45 should apply the patch or upgrade to a patched version. Siemens has also acknowledged the vulnerability in its SIMATIC S7-1500 CPU family and related products, advising customers to apply the provided remediation as per their advisory [1].