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7.5 High

CVE-2026-4111 Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive

Description

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.

CVSS 3.1 detail

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

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
None
Integrity
None
Availability
High

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 9 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 OpenShift Container Platform 4 Versions not published
Red Hat Hardened Images 1 Versions not published
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Versions not published
Red Hat Hardened Images 3.8 earliest → < 3.8.7-1.hum1 3.8.7-1.hum1
Show the 32 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 9.4 Extended Update Support Versions not published
Red Hat Enterprise Linux 9.6 Extended Update Support Versions not published
Red Hat Discovery 2 1775675922 earliest → < 1775675922 1775675922
Red Hat AI Inference Server 3.2 1775740563 earliest → < 1775740563 1775740563
Red Hat OpenShift Container Platform 4.13 413.92 earliest → < 413.92.202604080111-0 413.92.202604080111-0
Red Hat AI Inference Server 3.3 1775749857 earliest → < 1775749857 1775749857
Red Hat Enterprise Linux 10.0 Extended Update Support Versions not published
Red Hat OpenShift Container Platform 4.18 418.94 earliest → < 418.94.202604140044-0 418.94.202604140044-0
Red Hat Insights proxy 1.5 1776868961 earliest → < 1776868961 1776868961
Red Hat Update Infrastructure 5 1776868842 earliest → < 1776868842 1776868842
Red Hat OpenShift Container Platform 4.19 4.19 earliest → < 4.19.9.6.202604211219-0 4.19.9.6.202604211219-0
Red Hat OpenShift Container Platform 4.16 416.94 earliest → < 416.94.202604211449-0 416.94.202604211449-0
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 Enterprise Linux AppStream EUS (v. 10.0) Versions not published
Red Hat Enterprise Linux AppStream (v. 10) Versions not published
Red Hat Enterprise Linux AppStream E4S (v.9.0) Versions not published
Red Hat Enterprise Linux AppStream E4S (v.9.2) Versions not published
Red Hat Enterprise Linux AppStream EUS (v.9.4) Versions not published
Red Hat Enterprise Linux AppStream EUS (v.9.6) Versions not published
Red Hat Enterprise Linux AppStream (v. 9) Versions not published
Red Hat Enterprise Linux BaseOS EUS (v. 10.0) Versions not published
Red Hat Enterprise Linux BaseOS (v. 10) Versions not published
Red Hat Enterprise Linux BaseOS E4S (v.9.0) Versions not published
Red Hat Enterprise Linux BaseOS E4S (v.9.2) Versions not published
Red Hat Enterprise Linux BaseOS EUS (v.9.4) Versions not published
Red Hat Enterprise Linux BaseOS EUS (v.9.6) Versions not published
Red Hat Enterprise Linux BaseOS (v. 9) Versions not published
Red Hat CodeReady Linux Builder EUS (v.9.4) Versions not published
Cert Manager support for Red Hat OpenShift release 1.18 1791966259 earliest → < 1791966259 1791966259

References

Timeline

  1. Published
  2. Last modified

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