CVE-2026-14164
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.7%
52.5th percentile
CISA KEV
Not listed
Weakness / dates
CWE-415
Published 2026-06-30 · modified 2026-09-17
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.
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/errata/RHSA-2026:58558
- https://access.redhat.com/errata/RHSA-2026:58573
- https://access.redhat.com/errata/RHSA-2026:58574
- https://access.redhat.com/errata/RHSA-2026:58981
- https://access.redhat.com/errata/RHSA-2026:61783
- https://access.redhat.com/errata/RHSA-2026:62409
- https://access.redhat.com/errata/RHSA-2026:63041
- https://access.redhat.com/errata/RHSA-2026:63044
- https://access.redhat.com/errata/RHSA-2026:63100
- https://access.redhat.com/errata/RHSA-2026:65839
- https://access.redhat.com/errata/RHSA-2026:65851
- 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