CVE-2026-5121

Published: Mar 30, 2026

Modified: Jun 4, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

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.

Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	unaffected `0:3.1.2-14.el7_9.2 - < *`
Red Hat	Red Hat Enterprise Linux 8	unaffected `0:3.3.3-7.el8_10 - < *`
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support	unaffected `0:3.3.2-8.el8_2.2 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	unaffected `0:3.3.3-1.el8_4.2 - < *`
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	unaffected `0:3.3.3-1.el8_4.2 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	unaffected `0:3.3.3-6.el8_6.1 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service	unaffected `0:3.3.3-6.el8_6.1 - < *`
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions	unaffected `0:3.3.3-6.el8_6.1 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	unaffected `0:3.3.3-5.el8_8.2 - < *`
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	unaffected `0:3.3.3-5.el8_8.2 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:3.5.3-9.el9_7 - < *`
Red Hat	Red Hat Enterprise Linux 9	unaffected `0:3.5.3-9.el9_7 - < *`
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	unaffected `0:3.5.3-2.el9_0.4 - < *`
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	unaffected `0:3.5.3-5.el9_2.2 - < *`
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	unaffected `0:3.5.3-5.el9_4 - < *`
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	unaffected `0:3.5.3-7.el9_6.1 - < *`
Red Hat	Red Hat OpenShift Container Platform 4.12	unaffected `412.86.202604281506-0 - < *`
Red Hat	Red Hat OpenShift Container Platform 4.13	unaffected `413.92.202605271328-0 - < *`
Red Hat	Red Hat OpenShift Container Platform 4.14	unaffected `414.92.202605060243-0 - < *`
Red Hat	Red Hat OpenShift Container Platform 4.15	unaffected `415.92.202605060220-0 - < *`
Red Hat	Red Hat OpenShift Container Platform 4.16	unaffected `416.94.202604211449-0 - < *`
Red Hat	Red Hat OpenShift Container Platform 4.17	unaffected `417.94.202605112123-0 - < *`
Red Hat	Red Hat OpenShift Container Platform 4.18	unaffected `418.94.202604240015-0 - < *`
Red Hat	Red Hat OpenShift Container Platform 4.19	unaffected `4.19.9.6.202605201155-0 - < *`
Red Hat	RHEL-8 based Middleware Containers	unaffected `7.13.5-4.1777325677 - < *`
Red Hat	RHEL-8 based Middleware Containers	unaffected `7.13.5-4.1777325711 - < *`
Red Hat	RHEL-8 based Middleware Containers	unaffected `7.13.5-4.1777325710 - < *`
Red Hat	RHEL-8 based Middleware Containers	unaffected `7.13.5-3.1777325680 - < *`
Red Hat	RHEL-8 based Middleware Containers	unaffected `7.13.5-4.1777325709 - < *`
Red Hat	RHEL-8 based Middleware Containers	unaffected `7.13.5-4.1777325680 - < *`
Red Hat	RHEL-8 based Middleware Containers	unaffected `7.13.5-4.1777325708 - < *`
Red Hat	Red Hat AI Inference Server 3.2	unaffected `1779223654 - < *`
Red Hat	Red Hat AI Inference Server 3.2	unaffected `1779223651 - < *`
Red Hat	Red Hat AI Inference Server 3.3	unaffected `1778244559 - < *`
Red Hat	Red Hat AI Inference Server 3.3	unaffected `1778244531 - < *`
Red Hat	Red Hat AI Inference Server 3.3	unaffected `1778274666 - < *`
Red Hat	Red Hat AI Inference Server 3.3	unaffected `1778244546 - < *`
Red Hat	Red Hat Discovery 2	unaffected `1778156756 - < *`
Red Hat	Red Hat Hardened Images	unaffected `3.8.7-1.hum1 - < *`
Red Hat	Red Hat Insights proxy 1.5	unaffected `1776868961 - < *`
Red Hat	Red Hat Update Infrastructure 5	unaffected `1776868774 - < *`
Red Hat	Red Hat Update Infrastructure 5	unaffected `1776868744 - < *`
Red Hat	Red Hat Update Infrastructure 5	unaffected `1776868772 - < *`
Red Hat	Red Hat Update Infrastructure 5	unaffected `1776868842 - < *`
Red Hat	Red Hat Update Infrastructure 5	unaffected `1777459441 - < *`
Red Hat	Red Hat Update Infrastructure 5	unaffected `1777454300 - < *`
Red Hat	Red Hat Update Infrastructure 5	unaffected `1777459504 - < *`
Red Hat	Red Hat Enterprise Linux 10	All versions
Red Hat	Red Hat Enterprise Linux 6	All versions