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

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Red Hat Enterprise Linux 10是美国红帽（Red Hat）公司的一套面向企业用户的Linux操作系统。 Red Hat Enterprise Linux 10存在安全漏洞，该漏洞源于RAR5归档解压逻辑问题，可能导致无限循环和拒绝服务。

CVSS 7.5 · High EPSS 0.88% · P58

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 35

VendorProduct Version RangeStatus
Red Hat Red Hat AI Inference Server 3.2 1780681984< * unaffected
1775740563< * unaffected
Red Hat Red Hat AI Inference Server 3.3 1778244559< * unaffected
1778244531< * unaffected
1778244546< * unaffected
1775680192< * unaffected
1775680262< * unaffected
1775749857< * unaffected
Red Hat Red Hat Discovery 2 1775668717< * unaffected
1775675922< * unaffected
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 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any unaffected
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 0:3.5.3-7.el9_7< * unaffected
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 Hardened Images 3.8.7-1.hum1< * unaffected
Red Hat Red Hat Insights proxy 1.5 1776868961< * unaffected
Red Hat Red Hat OpenShift Container Platform 4 any 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 Update Infrastructure 5 1776868774< * unaffected
1776868744< * unaffected
1776868772< * unaffected
1776868842< * unaffected
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I. Basic Information for CVE-2026-4111

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Enterprise Linux 10 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Enterprise Linux 10是美国红帽（Red Hat）公司的一套面向企业用户的Linux操作系统。 Red Hat Enterprise Linux 10存在安全漏洞，该漏洞源于RAR5归档解压逻辑问题，可能导致无限循环和拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 0:3.7.7-5.el10_1 ~ * cpe:/o:redhat:enterprise_linux:10.1
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:3.7.7-5.el10_0 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 9 0:3.5.3-7.el9_7 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9 0:3.5.3-7.el9_7 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions 0:3.5.3-2.el9_0.3 ~ * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:3.5.3-5.el9_2.1 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:3.5.3-4.el9_4.2 ~ * cpe:/a:redhat:rhel_eus:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:3.5.3-6.el9_6.1 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat Red Hat OpenShift Container Platform 4.13 413.92.202604080111-0 ~ * cpe:/a:redhat:openshift:4.13::el9
Red Hat Red Hat OpenShift Container Platform 4.14 414.92.202605060243-0 ~ * cpe:/a:redhat:openshift:4.14::el9
Red Hat Red Hat OpenShift Container Platform 4.15 415.92.202605060220-0 ~ * cpe:/a:redhat:openshift:4.15::el9
Red Hat Red Hat OpenShift Container Platform 4.16 416.94.202604211449-0 ~ * cpe:/a:redhat:openshift:4.16::el9
Red Hat Red Hat OpenShift Container Platform 4.17 417.94.202605112123-0 ~ * cpe:/a:redhat:openshift:4.17::el9
Red Hat Red Hat OpenShift Container Platform 4.18 418.94.202604140044-0 ~ * cpe:/a:redhat:openshift:4.18::el9
Red Hat Red Hat OpenShift Container Platform 4.19 4.19.9.6.202604211219-0 ~ * cpe:/a:redhat:openshift:4.19::el9
Red Hat Red Hat AI Inference Server 3.2 1780681984 ~ * cpe:/a:redhat:ai_inference_server:3.2::el9
Red Hat Red Hat AI Inference Server 3.2 1775740563 ~ * cpe:/a:redhat:ai_inference_server:3.2::el9
Red Hat Red Hat AI Inference Server 3.3 1778244559 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat AI Inference Server 3.3 1778244531 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat AI Inference Server 3.3 1778244546 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat AI Inference Server 3.3 1775680192 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat AI Inference Server 3.3 1775680262 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat AI Inference Server 3.3 1775749857 ~ * cpe:/a:redhat:ai_inference_server:3.3::el9
Red Hat Red Hat Discovery 2 1775668717 ~ * cpe:/a:redhat:discovery:2::el9
Red Hat Red Hat Discovery 2 1775675922 ~ * cpe:/a:redhat:discovery:2::el9
Red Hat Red Hat Hardened Images 3.8.7-1.hum1 ~ * cpe:/a:redhat:hummingbird:1
Red Hat Red Hat Insights proxy 1.5 1776868961 ~ * cpe:/a:redhat:insights_proxy:1.5::el9
Red Hat Red Hat Update Infrastructure 5 1776868774 ~ * cpe:/a:redhat:rhui:5::el9
Red Hat Red Hat Update Infrastructure 5 1776868744 ~ * cpe:/a:redhat:rhui:5::el9
Red Hat Red Hat Update Infrastructure 5 1776868772 ~ * cpe:/a:redhat:rhui:5::el9

II. Public POCs for CVE-2026-4111

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8653 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-4111

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Patches & Fixes for CVE-2026-4111 (1)

Vendor Advisories for CVE-2026-4111 (24)

Same Patch Batch · Red Hat · 2026-03-13 · 4 CVEs total

CVE-2026-4105 6.7 MEDIUM Systemd: systemd: privilege escalation via improper access control in registermachine d-bu
CVE-2025-57849 6.4 MEDIUM Fuse: privilege escalation via excessive /etc/passwd permissions
CVE-2025-8766 6.4 MEDIUM Noobaa-core: excessive permissions of /etc could lead to escalation of privilege in the no

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-835

V. Comments for CVE-2026-4111

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