CVE-2026-4111

Friday, March 13, 2026

7.5

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

Summary

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.

Affected Software

Vendor	Product	Version Range	Status
Red Hat	Red Hat Enterprise Linux 10	`0:3.7.7-5.el10_1 < *`	unaffected
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	`0:3.7.7-5.el10_0 < *`	unaffected
Red Hat	Red Hat Enterprise Linux 9	`0:3.5.3-7.el9_7 < *`	unaffected
Red Hat	Red Hat Enterprise Linux 9	`0:3.5.3-7.el9_7 < *`	unaffected
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	`0:3.5.3-2.el9_0.3 < *`	unaffected
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	`0:3.5.3-5.el9_2.1 < *`	unaffected
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	`0:3.5.3-4.el9_4.2 < *`	unaffected
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	`0:3.5.3-6.el9_6.1 < *`	unaffected
Red Hat	Red Hat OpenShift Container Platform 4.13	`413.92.202604080111-0 < *`	unaffected
Red Hat	Red Hat OpenShift Container Platform 4.14	`414.92.202605060243-0 < *`	unaffected
Red Hat	Red Hat OpenShift Container Platform 4.15	`415.92.202605060220-0 < *`	unaffected
Red Hat	Red Hat OpenShift Container Platform 4.16	`416.94.202604211449-0 < *`	unaffected
Red Hat	Red Hat OpenShift Container Platform 4.17	`417.94.202605112123-0 < *`	unaffected
Red Hat	Red Hat OpenShift Container Platform 4.18	`418.94.202604140044-0 < *`	unaffected
Red Hat	Red Hat OpenShift Container Platform 4.19	`4.19.9.6.202604211219-0 < *`	unaffected
Red Hat	Red Hat AI Inference Server 3.2	`1780681984 < *`	unaffected
Red Hat	Red Hat AI Inference Server 3.2	`1775740563 < *`	unaffected
Red Hat	Red Hat AI Inference Server 3.3	`1778244559 < *`	unaffected
Red Hat	Red Hat AI Inference Server 3.3	`1778244531 < *`	unaffected
Red Hat	Red Hat AI Inference Server 3.3	`1778244546 < *`	unaffected
Red Hat	Red Hat AI Inference Server 3.3	`1775680192 < *`	unaffected
Red Hat	Red Hat AI Inference Server 3.3	`1775680262 < *`	unaffected
Red Hat	Red Hat AI Inference Server 3.3	`1775749857 < *`	unaffected
Red Hat	Red Hat Discovery 2	`1775668717 < *`	unaffected
Red Hat	Red Hat Discovery 2	`1775675922 < *`	unaffected
Red Hat	Red Hat Hardened Images	`3.8.7-1.hum1 < *`	unaffected
Red Hat	Red Hat Insights proxy 1.5	`1776868961 < *`	unaffected
Red Hat	Red Hat Update Infrastructure 5	`1776868774 < *`	unaffected
Red Hat	Red Hat Update Infrastructure 5	`1776868744 < *`	unaffected
Red Hat	Red Hat Update Infrastructure 5	`1776868772 < *`	unaffected
Red Hat	Red Hat Update Infrastructure 5	`1776868842 < *`	unaffected

Weaknesses

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

Workarounds

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.

ADP Enrichment

CISA ADP Vulnrichment

SSVC:
Exploitation: none
- Automatable: yes
- Technical Impact: partial

libarchive: Infinite Loop Denial of Service in RAR5 Decompression via archive_read_data() in libarchive

Additional References

References

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