Double Free in Red Hat Discovery 2
CVE-2026-14164
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.
Vulnerability class: Double Free
EPSS: 0.004 (28.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Red Hat Discovery 2 — versions 1786638573
- Red Hat Enterprise Linux 10 — versions 0:3.7.7-10.el10_2
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:3.5.3-11.el9_8
- Red Hat Hardened Images — versions 3.8.8-2.hum1
- Red Hat Openshift Container Platform 4
- Red Hat Update Infrastructure 5 — versions 1786435241, 1786533457, 1786533449
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com
- secalert@redhat.com
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2026-14164?
- CVE-2026-14164 is a high-severity vulnerability in Red Hat Discovery 2, classified under Double Free. CVSS score: 7.5/10. Published 2026-06-30.
- How severe is CVE-2026-14164?
- High severity. CVSS v3 base score is 7.5 out of 10.