medium6.5
CVE-2026-4426
A flaw was found in libarchive.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Libarchive | Libarchive | All versions |
| Redhat | Hardened Images | All versions |
| Redhat | Openshift Container Platform | Version 4.0 |
| Redhat | Enterprise Linux | Versions 6.0, 7.0, 8.0, 9.0, 10.0 |