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7.5 High

CVE-2026-5121 Libarchive: libarchive: arbitrary code execution via integer overflow in iso9660 image processing

Description

A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Network
Attack complexity
Low
Privileges required
None
Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 6 Versions not published
Red Hat Enterprise Linux 7 Versions not published
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat OpenShift Container Platform 4 Versions not published
Red Hat Hardened Images 3.8 earliest → < 3.8.7-1.hum1 3.8.7-1.hum1
Red Hat Enterprise Linux 7 Extended Lifecycle Support Versions not published
Red Hat Enterprise Linux 8.2 Advanced Update Support Versions not published
Show the 29 other branches
Product Affected versions Fixed in
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.4 Extended Update Support Versions not published
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Versions not published
Red Hat Enterprise Linux 8.6 Telecommunications Update Service Versions not published
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.6 Extended Update Support Versions not published
Red Hat Enterprise Linux 8.8 Telecommunications Update Service Versions not published
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Versions not published
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Versions not published
Red Hat Insights proxy 1.5 1776868961 earliest → < 1776868961 1776868961
Red Hat Update Infrastructure 5 1777459504 earliest → < 1777459504 1777459504
Red Hat OpenShift Container Platform 4.16 416.94 earliest → < 416.94.202604211449-0 416.94.202604211449-0
RHEL-8 based Middleware Containers 7.13 earliest → < 7.13.5-4.1777325708 7.13.5-4.1777325708
Red Hat Discovery 2 1778156756 earliest → < 1778156756 1778156756
Red Hat OpenShift Container Platform 4.12 412.86 earliest → < 412.86.202604281506-0 412.86.202604281506-0
Red Hat OpenShift Container Platform 4.18 418.94 earliest → < 418.94.202604240015-0 418.94.202604240015-0
Red Hat AI Inference Server 3.3 1778244546 earliest → < 1778244546 1778244546
Red Hat OpenShift Container Platform 4.14 414.92 earliest → < 414.92.202605060243-0 414.92.202605060243-0
Red Hat OpenShift Container Platform 4.15 415.92 earliest → < 415.92.202605060220-0 415.92.202605060220-0
Red Hat OpenShift Container Platform 4.17 417.94 earliest → < 417.94.202605112123-0 417.94.202605112123-0
Red Hat AI Inference Server 3.2 1780681984 earliest → < 1780681984 1780681984
Red Hat OpenShift Container Platform 4.19 4.19 earliest → < 4.19.9.6.202605201155-0 4.19.9.6.202605201155-0
Red Hat OpenShift Container Platform 4.13 413.92 earliest → < 413.92.202605271328-0 413.92.202605271328-0
SIDIS Secured SmartPlug 7.26 earliest → < 7.26.0310 7.26.0310
Cert Manager support for Red Hat OpenShift release 1.20 1790598593 earliest → < 1790598593 1790598593
Cert Manager support for Red Hat OpenShift release 1.17 1791970484 earliest → < 1791970484 1791970484
Cert Manager support for Red Hat OpenShift release 1.18 1791966259 earliest → < 1791966259 1791966259

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