CVE-2025-69644 is a denial-of-service vulnerability discovered in the objdump utility of GNU Binutils versions prior to 2.46. Objdump is a widely used tool for displaying information about object files, including debugging symbols encoded in the DWARF format. The vulnerability stems from a logic flaw in the handling of DWARF location list headers, which are used to describe variable locations in debug information. When objdump processes a crafted binary containing malformed or maliciously constructed DWARF debug data, it can enter an unbounded loop, continuously outputting data until manually interrupted. This behavior results in excessive CPU and memory consumption, effectively causing a denial of service on the host system. The flaw requires a local attacker to supply a malicious input file to trigger the condition; no remote exploitation vector or user interaction is necessary beyond providing the file to objdump. The vulnerability does not appear to affect confidentiality or integrity but impacts availability by exhausting system resources. No public exploits have been reported to date, and no CVSS score has been assigned. The issue is relevant to developers, security analysts, and system administrators who use objdump for debugging or binary analysis on affected systems. The fix involves correcting the logic in DWARF location list header processing, which is expected in Binutils version 2.46 or later.

The primary impact of CVE-2025-69644 is denial of service through resource exhaustion on systems running vulnerable versions of Binutils' objdump. Organizations relying on objdump for debugging, reverse engineering, or binary analysis could experience disruptions if a crafted malicious binary is processed. This could lead to wasted CPU cycles, increased memory usage, and potential system instability or degraded performance. While the attack requires local access to supply the malicious file, insider threats or compromised developer environments could exploit this vulnerability to disrupt operations. The vulnerability does not compromise data confidentiality or integrity but can affect availability of critical development and analysis tools. In environments with automated binary processing pipelines, this flaw could cause cascading failures or delays. Overall, the impact is moderate but could be significant in high-availability or resource-constrained environments.

To mitigate CVE-2025-69644, organizations should update Binutils to version 2.46 or later once the patch is released, as this will contain the fix for the DWARF location list header handling logic flaw. Until the update is applied, restrict usage of objdump to trusted binaries only and avoid processing untrusted or unknown files. Implement file integrity monitoring and scanning to detect potentially malformed binaries before analysis. Limit local user permissions to prevent unauthorized users from executing objdump on arbitrary files. Monitor system resource usage during binary analysis tasks to detect abnormal CPU or memory consumption indicative of exploitation attempts. Consider sandboxing or containerizing debugging tools to isolate potential denial-of-service effects. Additionally, educate developers and analysts about the risk of processing untrusted binaries with objdump. Regularly review and update security policies governing binary analysis workflows to incorporate these controls.