Signal is active with 1 mentions in latest observed window
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NVD description
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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
7 versions affected across 4 products
CVE-2026-4426 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`) re… https://www.cve.org/CVERecord?id=CVE-2026-4426
Post summary
An undefined behavior vulnerability was identified in libarchive's zisofs decompression logic due to improper validation of the `pz_log2_bs` field.
8 of 8 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | libarchive | libarchive | - | - | - |
| OS | redhat | enterprise_linux | 10.0 | - | - |
| OS | redhat | enterprise_linux | 6.0 | - | - |
| OS | redhat | enterprise_linux | 7.0 | - | - |
| OS | redhat | enterprise_linux | 8.0 | - | - |
| OS | redhat | enterprise_linux | 9.0 | - | - |
| App | redhat | hardened_images | - | - | - |
| App | redhat | openshift_container_platform | 4.0 | - | - |