Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:30333
- https://access.redhat.com/errata/RHSA-2026:52674
- https://access.redhat.com/errata/RHSA-2026:52675
- https://access.redhat.com/errata/RHSA-2026:54387
- https://access.redhat.com/errata/RHSA-2026:54760
- https://access.redhat.com/errata/RHSA-2026:54769
- https://access.redhat.com/errata/RHSA-2026:56954
- https://access.redhat.com/security/cve/CVE-2026-14164
- https://bugzilla.redhat.com/show_bug.cgi?id=2493411
- https://github.com/libarchive/libarchive/issues/3069
- https://github.com/libarchive/libarchive/pull/3071
- https://github.com/libarchive/libarchive/issues/3069
FAQ
What is CVE-2026-14164?
CVE-2026-14164 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 st...
How severe is CVE-2026-14164?
CVE-2026-14164 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-14164?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.