--- id: CVE-2026-14164 title: A double free issue has been identified in libarchive's RAR5 reader summary: >- 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 proc… severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H' cwe: - CWE-415 vendor: Red Hat product: libarchive affected: - libarchive (all versions) - libarchive (all versions) - libarchive (all versions) - libarchive (all versions) - libarchive (all versions) - libarchive (all versions) - libarchive (all versions) - rhcos (all versions) - rhcos (all versions) - rhcos (all versions) - rhcos (all versions) - rhcos (all versions) - rhcos (all versions) - rhcos (all versions) - discovery/discovery-server-rhel9 (all versions) - discovery/discovery-ui-rhel9 (all versions) - libarchive-main (all versions) - rhui5/cds-kubernetes-rhel9 (all versions) - rhui5/cds-rhel9 (all versions) - rhui5/haproxy-rhel9 (all versions) - rhui5/installer-rhel9 (all versions) - rhui5/rhua-rhel9 (all versions) - rhui5/cds-kubernetes-tp-rhel9 (all versions) - rhui5/installer-tp-rhel9 (all versions) - rhui5/rhua-tp-rhel9 (all versions) - libarchive - libarchive - libarchive - openshift/ose-rhel-coreos-8 patched: - openshift_container_platform 4.20 - openshift_container_platform 4.22 - enterprise_linux_appstream_eus_v_10_0 - enterprise_linux_appstream_v_10 - enterprise_linux_appstream_e4s_v_9_2 - enterprise_linux_appstream_e4s_v_9_4 - enterprise_linux_appstream_eus_v_9_6 - enterprise_linux_appstream_v_9 - enterprise_linux_baseos_eus_v_10_0 - enterprise_linux_baseos_v_10 - enterprise_linux_baseos_e4s_v_9_2 - enterprise_linux_baseos_e4s_v_9_4 - enterprise_linux_baseos_eus_v_9_6 - enterprise_linux_baseos_v_9 - discovery 2 - hardened_images - update_infrastructure 5 published: '2026-06-30' updated: '2026-09-24' sourceUpdated: '2026-09-24T12:17:10.310' source: NVD sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14164' references: - url: 'https://access.redhat.com/errata/RHSA-2026:30333' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:52674' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:52675' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:54387' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:54760' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:54769' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:56954' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:58558' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:58573' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:58574' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:58981' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:61783' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:62409' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:63041' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:63044' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:63100' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:65839' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:65851' label: secalert@redhat.com - url: 'https://access.redhat.com/errata/RHSA-2026:67935' label: secalert@redhat.com - url: 'https://access.redhat.com/security/cve/CVE-2026-14164' label: secalert@redhat.com - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2493411' label: secalert@redhat.com - url: 'https://github.com/libarchive/libarchive/issues/3069' label: secalert@redhat.com - url: 'https://github.com/libarchive/libarchive/pull/3071' label: secalert@redhat.com - url: 'https://github.com/libarchive/libarchive/issues/3069' label: 134c704f-9b21-4f2e-91b3-4a467353bcc0 - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-14164.json - url: 'https://www.cve.org/CVERecord?id=CVE-2026-14164' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14164' tags: - nvd - cve.org - exploit-available - csaf - vex - red-hat epss: 0.00735 epssPercentile: 0.5247 exploitAvailable: true ssvc: exploitation: poc automatable: 'yes' technicalImpact: partial timestamp: '2026-06-30T12:20:53.891666Z' ingestedAt: '2026-08-10T10:39:35.650Z' --- ## Overview 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. ## Remediation Refer to the linked advisories for vendor-supplied fixes and affected version ranges. ## Vendor advisories - **RHSA-2026:63100** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.20 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:63100) - **RHSA-2026:54769** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.22 · released 2026-08-18 · [advisory](https://access.redhat.com/errata/RHSA-2026:54769) - **RHSA-2026:56954** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0) · released 2026-08-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:56954) - **RHSA-2026:52675** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10) · released 2026-08-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:52675) - **RHSA-2026:58574** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux BaseOS E4S (v.9.2) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58574) - **RHSA-2026:58573** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.4), Red Hat Enterprise Linux BaseOS E4S (v.9.4) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58573) - **RHSA-2026:58558** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6) · released 2026-08-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:58558) - **RHSA-2026:52674** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9) · released 2026-08-10 · [advisory](https://access.redhat.com/errata/RHSA-2026:52674) - **RHSA-2026:54760** · Red Hat · fixed in: Red Hat Discovery 2 · released 2026-08-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:54760) - **RHSA-2026:61783** · Red Hat · fixed in: Red Hat Discovery 2 · released 2026-08-31 · [advisory](https://access.redhat.com/errata/RHSA-2026:61783) - **RHSA-2026:30333** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-06-26 · [advisory](https://access.redhat.com/errata/RHSA-2026:30333) - **RHSA-2026:63041** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.21 · released 2026-09-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:63041) - **RHSA-2026:63044** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.19 · released 2026-09-09 · [advisory](https://access.redhat.com/errata/RHSA-2026:63044) - **RHSA-2026:62409** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.14 · released 2026-09-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:62409) - **RHSA-2026:65851** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.18 · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:65851) - **RHSA-2026:65839** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.13 · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:65839) - **RHSA-2026:67935** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.16 · released 2026-09-24 · [advisory](https://access.redhat.com/errata/RHSA-2026:67935)