CVE-2026-4111 (GCVE-0-2026-4111)

Vulnerability from cvelistv5 – Published: 2026-03-13 11:45 – Updated: 2026-04-09 20:26
VLAI?
Title
Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive
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.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:3.7.7-5.el10_1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.1
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    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:3.5.3-7.el9_7 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:3.5.3-7.el9_7 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::baseos
    cpe:/a:redhat:enterprise_linux:9::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:3.5.3-2.el9_0.3 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.0::appstream
    cpe:/o:redhat:rhel_e4s:9.0::baseos
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:3.5.3-5.el9_2.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
    cpe:/o:redhat:rhel_e4s:9.2::baseos
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support Unaffected: 0:3.5.3-4.el9_4.2 , < * (rpm)
    cpe:/o:redhat:rhel_eus:9.4::baseos
    cpe:/a:redhat:rhel_eus:9.4::crb
    cpe:/a:redhat:rhel_eus:9.4::appstream
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    Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:3.5.3-6.el9_6.1 , < * (rpm)
    cpe:/o:redhat:rhel_eus:9.6::baseos
    cpe:/a:redhat:rhel_eus:9.6::appstream
 Create a notification for this product.
    Red Hat Red Hat AI Inference Server 3.2 Unaffected: sha256:54616c9f3e4d27120504b0b2020432ef3ff85286a50de7be842f05df0cfcd69e , < * (rpm)
    cpe:/a:redhat:ai_inference_server:3.2::el9
 Create a notification for this product.
    Red Hat Red Hat Discovery 2 Unaffected: sha256:040dadd657afdb9f0914f896a4962fd3dbf40b70c8037e4d72b6801b766c9b7d , < * (rpm)
    cpe:/a:redhat:discovery:2::el9
 Create a notification for this product.
    Red Hat Red Hat Discovery 2 Unaffected: sha256:062310de4b34e278f8c7e4634def673a77d1228d493541ef1264ba4cb83b68eb , < * (rpm)
    cpe:/a:redhat:discovery:2::el9
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    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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    Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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    Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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    Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Date Public ?
2026-03-11 00:00
Credits
Red Hat would like to thank Elhanan Haenel for reporting this issue.
Show details on NVD website
To clipboard 

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\"rpm\"}], \"packageName\": \"discovery/discovery-server-rhel9\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:discovery:2::el9\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Discovery 2\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"sha256:062310de4b34e278f8c7e4634def673a77d1228d493541ef1264ba4cb83b68eb\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"discovery/discovery-ui-rhel9\", \"collectionURL\": \"https://catalog.redhat.com/software/containers/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:6\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 6\", \"packageName\": \"libarchive\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unknown\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:7\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat 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\"timeline\": [{\"lang\": \"en\", \"time\": \"2026-03-11T11:18:51.609Z\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2026-03-11T00:00:00.000Z\", \"value\": \"Made public.\"}], \"datePublic\": \"2026-03-11T00:00:00.000Z\", \"references\": [{\"url\": \"https://access.redhat.com/errata/RHSA-2026:5063\", \"name\": \"RHSA-2026:5063\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:5080\", \"name\": \"RHSA-2026:5080\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:6647\", \"name\": \"RHSA-2026:6647\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:7093\", \"name\": \"RHSA-2026:7093\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:7105\", \"name\": \"RHSA-2026:7105\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:7106\", \"name\": \"RHSA-2026:7106\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:7329\", \"name\": \"RHSA-2026:7329\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2026-4111\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2446453\", \"name\": \"RHBZ#2446453\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://github.com/libarchive/libarchive/pull/2877\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-835\", \"description\": \"Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-04-09T15:16:23.723Z\"}, \"x_redhatCweChain\": \"CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-4111\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-09T15:16:23.723Z\", \"dateReserved\": \"2026-03-13T11:33:42.645Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-03-13T11:45:20.653Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.