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Severity by source

Vendor (redhat) PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vuln.today AI
7.5 HIGH

Triggered by parsing attacker-supplied archive data without privileges or interaction (AV:N/AC:L/PR:N/UI:N); impact is limited to a process crash so only A:H, with C:N/I:N.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Red Hat
7.5 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Jun 30, 2026 - 07:32 vuln.today
CVE Published
Jun 30, 2026 - 06:29 nvd
HIGH 7.5

DescriptionCVE.org

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.

AnalysisAI

Denial of service in libarchive's RAR5 reader allows remote attackers to crash applications that decompress untrusted RAR5 archives via a double-free (CWE-415) of the stale filtered_buf pointer. Reported by Red Hat and affecting libarchive as shipped across Red Hat Enterprise Linux 6 through 10, OpenShift Container Platform 4, and Red Hat Hardened Images, the flaw is triggered purely by parsing a malicious archive entry. No public exploit has been identified and the issue is not in CISA KEV; impact is limited to availability (CVSS 7.5, A:H only) with no code execution or data exposure claimed.

Technical ContextAI

libarchive is a widely embedded C library (the engine behind bsdtar/bsdcpio and countless backup, packaging, container, and file-management tools) that provides streaming read/write access to many archive formats, including RAR5. The defect is in the RAR5 unpacking code path: during reinitialization of the unpacking state, the filtered_buf buffer is freed but its pointer is left dangling (stale) rather than nulled. When a subsequent archive entry is processed, the same memory region is freed a second time, producing a classic CWE-415 double-free. Double-frees corrupt the heap allocator's internal bookkeeping, which in glibc typically aborts the process; the upstream discussion is tracked in libarchive issue #3069 with the fix in pull request #3071.

RemediationAI

Upstream fix available (PR/commit); released patched version not independently confirmed - apply the libarchive correction from pull request https://github.com/libarchive/libarchive/pull/3071 once it lands in a tagged release, and for Red Hat systems install the updated libarchive package when published per the advisory at https://access.redhat.com/security/cve/CVE-2026-14164 (track via Bugzilla https://bugzilla.redhat.com/show_bug.cgi?id=2493411). Until a packaged build is available, the practical compensating control is to avoid feeding untrusted RAR5 archives to libarchive: disable or block RAR handling in any service that automatically decompresses user-supplied archives, or gate such processing behind format allow-lists and sandbox the parser (separate process, resource limits, automatic restart) so a crash does not take down the host service - the trade-off is loss of RAR support and added operational complexity. Restrict and rate-limit the upload/ingest paths that reach the archive parser to reduce exposure to anonymous submitters.

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 Affected
SUSE Linux Enterprise Micro 5.3 Affected
SUSE Linux Enterprise Micro 5.4 Affected
SUSE Linux Enterprise Micro 5.5 Affected

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CVE-2026-14164 vulnerability details – vuln.today

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