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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (52.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
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
- access.redhat.com/security/cve/CVE-2026-14164 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- github.com/libarchive/libarchive/issues/3069
- github.com/libarchive/libarchive/pull/3071
- access.redhat.com/errata/RHSA-2026:30333 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:52675 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:52674 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:54387 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:54760 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:54769 (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.