Nixpkgs security tracker
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CVE-2026-4426
6.5 MEDIUM
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): LOW
- Privileges required (PR): NONE
- User interaction (UI): REQUIRED
- Scope (S): UNCHANGED
- Confidentiality impact (C): NONE
- Integrity impact (I): NONE
- Availability impact (A): HIGH
Libarchive: libarchive: denial of service via malformed iso file processing
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.
References
Affected products
rhcos
libarchive
Matching in nixpkgs
Package maintainers
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@dschrempf Dominik Schrempf <dominik.schrempf@gmail.com>
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@minijackson Rémi Nicole <minijackson@riseup.net>
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@edwtjo Edward Tjörnhammar <ed@cflags.cc>
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@nvmd Sergey Kazenyuk <kazenyuk@pm.me>
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@aanderse Aaron Andersen <aaron@fosslib.net>
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@cpages Carles Pagès <page@ruiec.cat>
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@sephalon Stefan Wiehler <me@sephalon.net>
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@peterhoeg Peter Hoeg <peter@hoeg.com>
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@jcumming Jack Cummings <jack@mudshark.org>
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@dan4ik605743 Danil Danevich <6057430gu@gmail.com>
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@TomaSajt TomaSajt