VDB
DEBIAN-CVE-2026-4426
DEBIAN-CVE-2026-4426
PUBLISHED
CVSS 6.5 MEDIUM
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.
Risk Scores
CVSS v3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:11 | libarchive | 0, 3.4.3-2, 3.4.3-2+deb11u1 |
| Debian:12 | libarchive | 3.6.2-1, 3.7.2-1, 3.7.2-1.1 |
| Debian:14 | libarchive | 3.8.6-1, 3.7.4-4, 0 |
| Debian:13 | libarchive | 0, 3.8.4-1, 3.8.6-1 |
Timeline
- Mar 19, 2026 CVE Published
- May 16, 2026 CVE Updated