Vulnerability Description
GNU cpio is vulnerable to an uncontrolled memory allocation in the make_path function at src/makepath.c. The function uses alloca to allocate stack memory based on the length of argpath, which is derived from an archive-controlled pathname during extraction. A malicious cpio archive containing a sufficiently long nested pathname causes an unbounded stack allocation, resulting in a stack overflow and crash of the cpio process. An attacker who can supply a crafted cpio archive to a victim who extracts it can cause a denial of service. This issue has been fixed in commit 3cd514031371d8aeeaf2048aa10103e02831aaa9
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-66485?
CVE-2026-66485 is a documented vulnerability. GNU cpio is vulnerable to an uncontrolled memory allocation in the make_path function at src/makepath.c. The function uses alloca to allocate stack memory based on the length of argpath, which is deri...
How severe is CVE-2026-66485?
CVSS scoring is not yet available for CVE-2026-66485. Check NVD for updates.
Is there a patch for CVE-2026-66485?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.