Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive
Summary
| CVE | CVE-2026-4111 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-03-13 19:55:13 UTC |
| Updated | 2026-06-30 03:20:30 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.006930000 probability, percentile 0.483730000 (date 2026-07-02)
Problem Types: CWE-835 | CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat Enterprise Linux 10 | unaffected 0:3.7.7-5.el10_1 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | unaffected 0:3.7.7-5.el10_0 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:3.5.3-7.el9_7 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:3.5.3-7.el9_7 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.0 Update Services For SAP Solutions | unaffected 0:3.5.3-2.el9_0.3 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.2 Update Services For SAP Solutions | unaffected 0:3.5.3-5.el9_2.1 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | unaffected 0:3.5.3-4.el9_4.2 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | unaffected 0:3.5.3-6.el9_6.1 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift Container Platform 4.13 | unaffected 413.92.202604080111-0 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift Container Platform 4.14 | unaffected 414.92.202605060243-0 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift Container Platform 4.15 | unaffected 415.92.202605060220-0 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift Container Platform 4.16 | unaffected 416.94.202604211449-0 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift Container Platform 4.17 | unaffected 417.94.202605112123-0 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift Container Platform 4.18 | unaffected 418.94.202604140044-0 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift Container Platform 4.19 | unaffected 4.19.9.6.202604211219-0 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.2 | unaffected 1780681984 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.2 | unaffected 1775740563 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.3 | unaffected 1778244559 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.3 | unaffected 1778244531 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.3 | unaffected 1778244546 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.3 | unaffected 1775680192 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.3 | unaffected 1775680262 * rpm | Not specified |
| CNA | Red Hat | Red Hat AI Inference Server 3.3 | unaffected 1775749857 * rpm | Not specified |
| CNA | Red Hat | Red Hat Discovery 2 | unaffected 1775668717 * rpm | Not specified |
| CNA | Red Hat | Red Hat Discovery 2 | unaffected 1775675922 * rpm | Not specified |
| CNA | Red Hat | Red Hat Hardened Images | unaffected 3.8.7-1.hum1 * rpm | Not specified |
| CNA | Red Hat | Red Hat Insights Proxy 1.5 | unaffected 1776868961 * rpm | Not specified |
| CNA | Red Hat | Red Hat Update Infrastructure 5 | unaffected 1776868774 * rpm | Not specified |
| CNA | Red Hat | Red Hat Update Infrastructure 5 | unaffected 1776868744 * rpm | Not specified |
| CNA | Red Hat | Red Hat Update Infrastructure 5 | unaffected 1776868772 * rpm | Not specified |
| CNA | Red Hat | Red Hat Update Infrastructure 5 | unaffected 1776868842 * rpm | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 6 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
| CNA | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4.13 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4.14 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4.15 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4.16 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4.17 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4.18 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4.19 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AppStream EUS V. 10.0 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AppStream V. 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AppStream E4S V.9.0 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AppStream E4S V.9.2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AppStream EUS V.9.4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AppStream EUS V.9.6 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux AppStream V. 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux BaseOS EUS V. 10.0 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux BaseOS V. 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux BaseOS E4S V.9.0 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux BaseOS E4S V.9.2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux BaseOS EUS V.9.4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux BaseOS EUS V.9.6 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux BaseOS V. 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat CodeReady Linux Builder EUS V.9.4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server 3.2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat AI Inference Server 3.3 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Discovery 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Hardened Images | Not specified | Not specified |
| ADP | Red Hat | Red Hat Insights Proxy 1.5 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Update Infrastructure 5 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 6 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 7 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 8 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:7106 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:7239 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:25096 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:14773 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:10081 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:7335 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8865 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:16009 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8944 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8747 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4111.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:17596 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:15087 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:16174 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:9832 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:10065 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:5080 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:16008 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8423 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:7093 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8746 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:8748 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:10097 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:5063 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-4111 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:7105 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| github.com/libarchive/libarchive/pull/2877 | [email protected] | github.com | |
| access.redhat.com/errata/RHSA-2026:6647 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:7329 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Red Hat would like to thank Elhanan Haenel for reporting this issue. (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-03-11T11:18:51.609Z | Reported to Red Hat. |
| CNA | 2026-03-11T00:00:00.000Z | Made public. |
| ADP | 2026-03-11T11:18:51.609Z | Reported to Red Hat. |
| ADP | 2026-03-11T00:00:00.000Z | Made public. |
Solutions
ADP: RHSA-2026:7239: Red Hat OpenShift Container Platform 4.13
ADP: RHSA-2026:15087: Red Hat OpenShift Container Platform 4.14
ADP: RHSA-2026:14773: Red Hat OpenShift Container Platform 4.15
ADP: RHSA-2026:10097: Red Hat OpenShift Container Platform 4.16
ADP: RHSA-2026:17596: Red Hat OpenShift Container Platform 4.17
ADP: RHSA-2026:8423: Red Hat OpenShift Container Platform 4.18
ADP: RHSA-2026:10081: Red Hat OpenShift Container Platform 4.19
ADP: RHSA-2026:8865: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0)
ADP: RHSA-2026:5063: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10)
ADP: RHSA-2026:7093: Red Hat Enterprise Linux AppStream E4S (v.9.0), Red Hat Enterprise Linux BaseOS E4S (v.9.0)
ADP: RHSA-2026:6647: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux BaseOS E4S (v.9.2)
ADP: 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)
ADP: RHSA-2026:7105: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6)
ADP: RHSA-2026:5080: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9)
ADP: RHSA-2026:25096: Red Hat AI Inference Server 3.2
ADP: RHSA-2026:7335: Red Hat AI Inference Server 3.2
ADP: RHSA-2026:16008: Red Hat AI Inference Server 3.3
ADP: RHSA-2026:8748: Red Hat AI Inference Server 3.3
ADP: RHSA-2026:8746: Red Hat AI Inference Server 3.3
ADP: RHSA-2026:8747: Red Hat AI Inference Server 3.3
ADP: RHSA-2026:16009: Red Hat AI Inference Server 3.3
ADP: RHSA-2026:16174: Red Hat AI Inference Server 3.3
ADP: RHSA-2026:7329: Red Hat Discovery 2
ADP: RHSA-2026:8944: Red Hat Hardened Images
ADP: RHSA-2026:9832: Red Hat Insights proxy 1.5
ADP: RHSA-2026:10065: Red Hat Update Infrastructure 5
Workarounds
CNA: 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: 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.