CVE-2026-14164

Libarchive: double-free vulnerability in rar5 decompression logic via dangling filtered_buf pointer in init_unpack()

Published Jun 30, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.

Remediation

Vendor Workaround

No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability. Customers are advised to apply the appropriate security update once it becomes available.

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4762-1 libarchive security update
Ubuntu USN Ubuntu USN USN-8581-1 libarchive vulnerabilities
References
Link Providers
https://access.redhat.com/errata/RHSA-2026:30333 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:52674 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:52675 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:54387 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:54760 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:54769 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:56954 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:58558 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:58573 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:58574 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:58981 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:61783 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:62409 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:63041 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:63044 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:63100 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65839 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:65851 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:67857 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:67935 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:70586 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:70615 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:72394 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:72395 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:72399 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:72470 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:72475 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:72476 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:72502 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:73909 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:73959 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:73960 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:73961 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:73962 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:74458 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:74459 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:74460 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:74461 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:74462 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:74463 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:74674 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82061 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82304 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82322 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82336 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82347 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82354 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82371 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82372 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82857 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2026:82888 cve-icon cve-icon
https://access.redhat.com/security/cve/CVE-2026-14164 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2493411 cve-icon cve-icon
https://github.com/libarchive/libarchive/issues/3069 cve-icon cve-icon cve-icon
https://github.com/libarchive/libarchive/pull/3071 cve-icon cve-icon
History
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift_ai
Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/a:redhat:enterprise_linux:8
cpe:/o:redhat:rhel_els:6
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:5
Type Values Removed Values Added
First Time appeared Redhat ai Inference Server
CPEs cpe:/a:redhat:ai_inference_server:3.5::el9
Vendors & Products Redhat ai Inference Server
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift_ai:3.4::el9
References
Type Values Removed Values Added
First Time appeared Redhat cert Manager
CPEs cpe:/a:redhat:cert_manager:1.20::el9
Vendors & Products Redhat cert Manager
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.19::el9
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.21::el9
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4.20::el9
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4
Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_eus:9.6::appstream
cpe:/o:redhat:rhel_eus:9.6::baseos
Vendors & Products Redhat rhel Eus
References
Type Values Removed Values Added
First Time appeared Redhat rhel E4s
CPEs cpe:/a:redhat:rhel_e4s:9.2::appstream
cpe:/a:redhat:rhel_e4s:9.4::appstream
cpe:/o:redhat:rhel_e4s:9.2::baseos
cpe:/o:redhat:rhel_e4s:9.4::baseos
Vendors & Products Redhat rhel E4s
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4
Type Values Removed Values Added
First Time appeared Redhat enterprise Linux Eus
CPEs cpe:/o:redhat:enterprise_linux_eus:10.0
Vendors & Products Redhat enterprise Linux Eus
References
Type Values Removed Values Added
CPEs cpe:/a:redhat:openshift:4 cpe:/a:redhat:openshift:4.22::el9
References
Type Values Removed Values Added
First Time appeared Redhat discovery
CPEs cpe:/a:redhat:discovery:2::el9
Vendors & Products Redhat discovery
References
Type Values Removed Values Added
First Time appeared Redhat rhui
CPEs cpe:/a:redhat:rhui:5::el9
Vendors & Products Redhat rhui
References
Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9 cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/o:redhat:enterprise_linux:9::baseos
References
Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:10.2
References
Type Values Removed Values Added
First Time appeared Libarchive
Libarchive libarchive
Red Hat
Red Hat enterprise Linux
Redhat hardened Images
Redhat openshift Container Platform
Vendors & Products Libarchive
Libarchive libarchive
Red Hat
Red Hat enterprise Linux
Redhat hardened Images
Redhat openshift Container Platform
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.
Title Libarchive: double-free vulnerability in rar5 decompression logic via dangling filtered_buf pointer in init_unpack()
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Weaknesses CWE-415
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}