DEBIAN-CVE-2026-4426 - debian/libarchive
A flaw was found in libarchive. An Undefined Behavior vulnerability exists in the zisofs decompression logic, caused by improper validation of a field (`pz_log2_bs`) read from ISO9660 Rock Ridge extensions. A remote attacker can exploit this by supplying a specially crafted ISO file. This can lead to incorrect memory allocation and potential application crashes, resulting in a denial-of-service (DoS) condition.
CVSS 6.5 (MEDIUM)
Evidence
- imported from OSV Debian, untriaged
History
- 2026-10-28: pending-human-approval - bulk import