CVE-2026-5121 Libarchive: libarchive: arbitrary code execution via integer overflow in iso9660 image processing
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.
Problem types: cwe_id: CWE-190
description: Integer Overflow or Wraparound
Affected products: vendor: Red Hat
product: Red Hat Enterprise Linux 7 Extended Lifecycle Support
cpes: cpe:/o:redhat:rhel_els:7
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8
cpes: cpe:/a:redhat:enterprise_linux:8::crb
cpe:/o:redhat:enterprise_linux:8::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.2 Advanced Update Support
cpes: cpe:/o:redhat:rhel_aus:8.2::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
cpes: cpe:/o:redhat:rhel_aus:8.4::baseos
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
cpes: cpe:/o:redhat:rhel_aus:8.4::baseos
cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
cpes: cpe:/o:redhat:rhel_aus:8.6::baseos
cpe:/o:redhat:rhel_e4s:8.6::baseos
cpe:/o:redhat:rhel_tus:8.6::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.6 Telecommunications Update Service
cpes: cpe:/o:redhat:rhel_aus:8.6::baseos
cpe:/o:redhat:rhel_e4s:8.6::baseos
cpe:/o:redhat:rhel_tus:8.6::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
cpes: cpe:/o:redhat:rhel_aus:8.6::baseos
cpe:/o:redhat:rhel_e4s:8.6::baseos
cpe:/o:redhat:rhel_tus:8.6::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.8 Telecommunications Update Service
cpes: cpe:/o:redhat:rhel_e4s:8.8::baseos
cpe:/o:redhat:rhel_tus:8.8::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
cpes: cpe:/o:redhat:rhel_e4s:8.8::baseos
cpe:/o:redhat:rhel_tus:8.8::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9
cpes: cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/o:redhat:enterprise_linux:9::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9
cpes: cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/o:redhat:enterprise_linux:9::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
cpes: cpe:/a:redhat:rhel_e4s:9.0::appstream
cpe:/o:redhat:rhel_e4s:9.0::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
cpes: cpe:/a:redhat:rhel_e4s:9.2::appstream
cpe:/o:redhat:rhel_e4s:9.2::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9.4 Extended Update Support
cpes: cpe:/a:redhat:rhel_eus:9.4::appstream
cpe:/a:redhat:rhel_eus:9.4::crb
cpe:/o:redhat:rhel_eus:9.4::baseos
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 9.6 Extended Update Support
cpes: cpe:/a:redhat:rhel_eus:9.6::appstream
cpe:/o:redhat:rhel_eus:9.6::baseos
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4.12
cpes: cpe:/a:redhat:openshift:4.12::el8
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4.13
cpes: cpe:/a:redhat:openshift:4.13::el9
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4.14
cpes: cpe:/a:redhat:openshift:4.14::el9
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4.15
cpes: cpe:/a:redhat:openshift:4.15::el9
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4.16
cpes: cpe:/a:redhat:openshift:4.16::el9
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4.17
cpes: cpe:/a:redhat:openshift:4.17::el9
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4.18
cpes: cpe:/a:redhat:openshift:4.18::el9
default_status: affected
vendor: Red Hat
product: Red Hat OpenShift Container Platform 4.19
cpes: cpe:/a:redhat:openshift:4.19::el9
default_status: affected
vendor: Red Hat
product: RHEL-8 based Middleware Containers
cpes: cpe:/a:redhat:rhosemc:1.0::el8
default_status: affected
vendor: Red Hat
product: RHEL-8 based Middleware Containers
cpes: cpe:/a:redhat:rhosemc:1.0::el8
default_status: affected
vendor: Red Hat
product: RHEL-8 based Middleware Containers
cpes: cpe:/a:redhat:rhosemc:1.0::el8
default_status: affected
vendor: Red Hat
product: RHEL-8 based Middleware Containers
cpes: cpe:/a:redhat:rhosemc:1.0::el8
default_status: affected
vendor: Red Hat
product: RHEL-8 based Middleware Containers
cpes: cpe:/a:redhat:rhosemc:1.0::el8
default_status: affected
vendor: Red Hat
product: RHEL-8 based Middleware Containers
cpes: cpe:/a:redhat:rhosemc:1.0::el8
default_status: affected
vendor: Red Hat
product: RHEL-8 based Middleware Containers
cpes: cpe:/a:redhat:rhosemc:1.0::el8
default_status: affected
vendor: Red Hat
product: Red Hat AI Inference Server 3.2
cpes: cpe:/a:redhat:ai_inference_server:3.2::el9
default_status: affected
vendor: Red Hat
product: Red Hat AI Inference Server 3.2
cpes: cpe:/a:redhat:ai_inference_server:3.2::el9
default_status: affected
vendor: Red Hat
product: Red Hat AI Inference Server 3.3
cpes: cpe:/a:redhat:ai_inference_server:3.3::el9
default_status: affected
vendor: Red Hat
product: Red Hat AI Inference Server 3.3
cpes: cpe:/a:redhat:ai_inference_server:3.3::el9
default_status: affected
vendor: Red Hat
product: Red Hat AI Inference Server 3.3
cpes: cpe:/a:redhat:ai_inference_server:3.3::el9
default_status: affected
vendor: Red Hat
product: Red Hat AI Inference Server 3.3
cpes: cpe:/a:redhat:ai_inference_server:3.3::el9
default_status: affected
vendor: Red Hat
product: Red Hat Discovery 2
cpes: cpe:/a:redhat:discovery:2::el9
default_status: affected
vendor: Red Hat
product: Red Hat Hardened Images
cpes: cpe:/a:redhat:hummingbird:1
default_status: affected
vendor: Red Hat
product: Red Hat Insights proxy 1.5
cpes: cpe:/a:redhat:insights_proxy:1.5::el9
default_status: affected
vendor: Red Hat
product: Red Hat Update Infrastructure 5
cpes: cpe:/a:redhat:rhui:5::el9
default_status: affected
vendor: Red Hat
product: Red Hat Update Infrastructure 5
cpes: cpe:/a:redhat:rhui:5::el9
default_status: affected
vendor: Red Hat
product: Red Hat Update Infrastructure 5
cpes: cpe:/a:redhat:rhui:5::el9
default_status: affected
vendor: Red Hat
product: Red Hat Update Infrastructure 5
cpes: cpe:/a:redhat:rhui:5::el9
default_status: affected
vendor: Red Hat
product: Red Hat Update Infrastructure 5
cpes: cpe:/a:redhat:rhui:5::el9
default_status: affected
vendor: Red Hat
product: Red Hat Update Infrastructure 5
cpes: cpe:/a:redhat:rhui:5::el9
default_status: affected
vendor: Red Hat
product: Red Hat Update Infrastructure 5
cpes: cpe:/a:redhat:rhui:5::el9
default_status: affected
vendor: Red Hat
product: Red Hat Enterprise Linux 10
cpes: cpe:/o:redhat:enterprise_linux:10
default_status: unknown
vendor: Red Hat
product: Red Hat Enterprise Linux 6
cpes: cpe:/o:redhat:enterprise_linux:6
default_status: unknown
CVSS v3.1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
version: 3.1
Credits: lang: en
value: Red Hat would like to thank Elhanan Haenel for reporting this issue.
Published: 2026-03-30T07:47:28.562Z