CVE-2026-14164

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 Vector

References

• https://access.redhat.com/errata/RHSA-2026:30333
• 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