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CVE-2026-4426

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CVSS 3.1
6.5 medium
EPSS
<1%p23
Published
()
Modified
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.

Vendors
libarchiveredhat
Products
libarchive, hardened images, openshift container platform, enterprise linux
Weakness
CWE-1335
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

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