Public vulnerability disclosure

CVE-2026-4111

Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive

publishedCWE-835

A flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archive_read_data() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives.

Technical severity7.5 highCVSS 3.1 · CNA: redhat
Published2026-03-13Source updated 2026-11-04
Collected2026-11-053 attributed sources

Fixes and workarounds

Workaround

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Source: CNA: redhat

Fix

RHSA-2026:7239: Red Hat OpenShift Container Platform 4.13 RHSA-2026:15087: Red Hat OpenShift Container Platform 4.14 RHSA-2026:14773: Red Hat OpenShift Container Platform 4.15 RHSA-2026:10097: Red Hat OpenShift Container Platform 4.16 RHSA-2026:17596: Red Hat OpenShift Container Platform 4.17 RHSA-2026:8423: Red Hat OpenShift Container Platform 4.18 RHSA-2026:10081: Red Hat OpenShift Container Platform 4.19 RHSA-2026:8865: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0) RHSA-2026:5063: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10) RHSA-2026:7093: Red Hat Enterprise Linux AppStream E4S (v.9.0), Red Hat Enterprise Linux BaseOS E4S (v.9.0) RHSA-2026:6647: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux BaseOS E4S (v.9.2) RHSA-2026:7106: Red Hat CodeReady Linux Builder EUS (v.9.4), Red Hat Enterprise Linux AppStream EUS (v.9.4), Red Hat Enterprise Linux BaseOS EUS (v.9.4) RHSA-2026:7105: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6) RHSA-2026:5080: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9) RHSA-2026:25096: Red Hat AI Inference Server 3.2 RHSA-2026:7335: Red Hat AI Inference Server 3.2 RHSA-2026:16008: Red Hat AI Inference Server 3.3 RHSA-2026:8748: Red Hat AI Inference Server 3.3 RHSA-2026:8746: Red Hat AI Inference Server 3.3 RHSA-2026:8747: Red Hat AI Inference Server 3.3 RHSA-2026:16009: Red Hat AI Inference Server 3.3 RHSA-2026:16174: Red Hat AI Inference Server 3.3 RHSA-2026:7329: Red Hat Discovery 2 RHSA-2026:8944: Red Hat Hardened Images RHSA-2026:9832: Red Hat Insights proxy 1.5 RHSA-2026:10065: Red Hat Update Infrastructure 5

Source: ADP: redhat-SADP

Workaround

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Source: ADP: redhat-SADP

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
Red Hat Enterprise Linux 10
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.7.7-5.el10_1; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.7.7-5.el10_0; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Enterprise Linux 9
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-7.el9_7; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-2.el9_0.3; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-5.el9_2.1; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Enterprise Linux 9.4 Extended Update Support
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-4.el9_4.2; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Enterprise Linux 9.6 Extended Update Support
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-6.el9_6.1; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat OpenShift Container Platform 4.13
Red Hat
openshift/ose-rhel-coreos-9
https://access.redhat.com/downloads/content/package-browser/
≥ 413.92.202604080111-0; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat OpenShift Container Platform 4.14
Red Hat
openshift/ose-rhel-coreos-9
https://access.redhat.com/downloads/content/package-browser/
≥ 414.92.202605060243-0; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat OpenShift Container Platform 4.15
Red Hat
openshift/ose-rhel-coreos-9
https://access.redhat.com/downloads/content/package-browser/
≥ 415.92.202605060220-0; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat OpenShift Container Platform 4.16
Red Hat
openshift/ose-rhel-coreos-9
https://access.redhat.com/downloads/content/package-browser/
≥ 416.94.202604211449-0; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat OpenShift Container Platform 4.17
Red Hat
openshift/ose-rhel-coreos-9
https://access.redhat.com/downloads/content/package-browser/
≥ 417.94.202605112123-0; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat OpenShift Container Platform 4.18
Red Hat
openshift/ose-rhel-coreos-9
https://access.redhat.com/downloads/content/package-browser/
≥ 418.94.202604140044-0; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat OpenShift Container Platform 4.19
Red Hat
openshift/ose-rhel-coreos-9
https://access.redhat.com/downloads/content/package-browser/
≥ 4.19.9.6.202604211219-0; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Cert Manager support for Red Hat OpenShift release 1.18
Red Hat
cert-manager/jetstack-cert-manager-acmesolver-rhel9
https://catalog.redhat.com/software/containers/
≥ 1791459707; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Cert Manager support for Red Hat OpenShift release 1.18
Red Hat
cert-manager/jetstack-cert-manager-rhel9
https://catalog.redhat.com/software/containers/
≥ 1791459711; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Cert Manager support for Red Hat OpenShift release 1.18
Red Hat
cert-manager/cert-manager-istio-csr-rhel9
https://catalog.redhat.com/software/containers/
≥ 1791459759; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Cert Manager support for Red Hat OpenShift release 1.18
Red Hat
cert-manager/cert-manager-operator-rhel9
https://catalog.redhat.com/software/containers/
≥ 1789029076; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Cert Manager support for Red Hat OpenShift release 1.18
Red Hat
cert-manager/cert-manager-operator-bundle
https://catalog.redhat.com/software/containers/
≥ 1791966259; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat AI Inference Server 3.2
Red Hat
rhaiis/model-opt-cuda-rhel9
https://catalog.redhat.com/software/containers/
≥ 1780681984; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat AI Inference Server 3.2
Red Hat
rhaiis/vllm-cuda-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775740563; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/model-opt-cuda-rhel9
https://catalog.redhat.com/software/containers/
≥ 1778244559; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/vllm-rocm-rhel9
https://catalog.redhat.com/software/containers/
≥ 1778244531; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/vllm-spyre-rhel9
https://catalog.redhat.com/software/containers/
≥ 1778244546; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/vllm-cuda-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775680192; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/vllm-rocm-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775680262; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/model-opt-cuda-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775749857; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Discovery 2
Red Hat
discovery/discovery-server-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775668717; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Discovery 2
Red Hat
discovery/discovery-ui-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775675922; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Hardened Images
Red Hat
libarchive-main
https://catalog.redhat.com/software/containers/
≥ 3.8.7-1.hum1; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Insights proxy 1.5
Red Hat
insights-proxy/insights-proxy-container-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868961; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Update Infrastructure 5
Red Hat
rhui5/cds-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868774; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Update Infrastructure 5
Red Hat
rhui5/haproxy-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868744; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Update Infrastructure 5
Red Hat
rhui5/installer-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868772; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Update Infrastructure 5
Red Hat
rhui5/rhua-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868842; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Enterprise Linux 6
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unknown
CNA: redhat
Red Hat Enterprise Linux 7
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unaffected
CNA: redhat
Red Hat Enterprise Linux 8
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unaffected
CNA: redhat
Red Hat OpenShift Container Platform 4
Red Hat
openshift/ose-rhel-coreos-8
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unaffected
CNA: redhat
Red Hat Enterprise Linux 10
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.7.7-5.el10_1; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Enterprise Linux 10.0 Extended Update Support
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.7.7-5.el10_0; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Enterprise Linux 9
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-7.el9_7; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-2.el9_0.3; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-5.el9_2.1; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Enterprise Linux 9.4 Extended Update Support
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-4.el9_4.2; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Enterprise Linux 9.6 Extended Update Support
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
≥ 0:3.5.3-6.el9_6.1; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat OpenShift Container Platform 4.13
Red Hat
rhcos
https://access.redhat.com/downloads/content/package-browser/
≥ 413.92.202604080111-0; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat OpenShift Container Platform 4.14
Red Hat
rhcos
https://access.redhat.com/downloads/content/package-browser/
≥ 414.92.202605060243-0; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat OpenShift Container Platform 4.15
Red Hat
rhcos
https://access.redhat.com/downloads/content/package-browser/
≥ 415.92.202605060220-0; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat OpenShift Container Platform 4.16
Red Hat
rhcos
https://access.redhat.com/downloads/content/package-browser/
≥ 416.94.202604211449-0; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat OpenShift Container Platform 4.17
Red Hat
rhcos
https://access.redhat.com/downloads/content/package-browser/
≥ 417.94.202605112123-0; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat OpenShift Container Platform 4.18
Red Hat
rhcos
https://access.redhat.com/downloads/content/package-browser/
≥ 418.94.202604140044-0; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat OpenShift Container Platform 4.19
Red Hat
rhcos
https://access.redhat.com/downloads/content/package-browser/
≥ 4.19.9.6.202604211219-0; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat AI Inference Server 3.2
Red Hat
rhaiis/model-opt-cuda-rhel9
https://catalog.redhat.com/software/containers/
≥ 1780681984; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat AI Inference Server 3.2
Red Hat
rhaiis/vllm-cuda-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775740563; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/model-opt-cuda-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775749857; < * (unaffected, rpm)
≥ 1778244559; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/vllm-rocm-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775680262; < * (unaffected, rpm)
≥ 1778244531; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/vllm-spyre-rhel9
https://catalog.redhat.com/software/containers/
≥ 1778244546; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat AI Inference Server 3.3
Red Hat
rhaiis/vllm-cuda-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775680192; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Discovery 2
Red Hat
discovery/discovery-server-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775668717; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Discovery 2
Red Hat
discovery/discovery-ui-rhel9
https://catalog.redhat.com/software/containers/
≥ 1775675922; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Hardened Images
Red Hat
libarchive-main
https://access.redhat.com/downloads/content/package-browser/
≥ 3.8.7-1.hum1; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Insights proxy 1.5
Red Hat
insights-proxy/insights-proxy-container-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868961; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Update Infrastructure 5
Red Hat
rhui5/cds-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868774; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Update Infrastructure 5
Red Hat
rhui5/haproxy-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868744; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Update Infrastructure 5
Red Hat
rhui5/installer-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868772; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Update Infrastructure 5
Red Hat
rhui5/rhua-rhel9
https://catalog.redhat.com/software/containers/
≥ 1776868842; < * (unaffected, rpm)
Other versions: affected
ADP: redhat-SADP
Red Hat Enterprise Linux 6
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unknown
ADP: redhat-SADP
Red Hat Enterprise Linux 7
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unaffected
ADP: redhat-SADP
Red Hat Enterprise Linux 8
Red Hat
libarchive
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: unaffected
ADP: redhat-SADP

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
3.1 / 7.5
high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCNA: redhat
3.1 / 7.5
high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HADP: redhat-SADP
3.1 / 7.5
high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD: [email protected]
3.1 / 7.5
high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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