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CVE-2026-14164

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

Published: Jun 30, 2026Updated: Sep 17, 2026 Sources: CVE List NVDCWE-415
7.5HIGH
NVD MITRE
EPSS Score
0.5%
Top 58.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-415

Affected Products

Red Hat
commercial·US
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 10.0 Extended Update SupportOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 9.4 Update Services for SAP SolutionsOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 9.6 Extended Update SupportOn-premOS
Operating Systems / linux-distro
Red Hat OpenShift Container Platform 4.13SaaSSaaS Service
Cloud & SaaS / container-orchestration
Red Hat OpenShift Container Platform 4.14SaaSSaaS Service
Cloud & SaaS / container-orchestration
Red Hat OpenShift Container Platform 4.18On-premSaaS Service
Cloud & SaaS / container-orchestration
and 12 more affected products View all →

Exploitability

Workaround Available
Is your org exposed to CVE-2026-14164?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:30333
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:52674
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:52675
access.redhat.com
and 19 more references View all →

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