{"id":"CVE-2026-4424","title":"A flaw was found in libarchive","summary":"A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote atta…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-125"],"vendor":"libarchive","product":"libarchive","affected":["libarchive","hardened_images","openshift_container_platform = 4.0","openshift_container_platform = 4.16","openshift_container_platform_for_arm64 = 4.16","openshift_container_platform_for_power = 4.16","enterprise_linux = 6.0","enterprise_linux = 7.0","enterprise_linux = 8.0","enterprise_linux = 9.0","enterprise_linux = 10.0","enterprise_linux_server_aus = 8.2","enterprise_linux_server_aus = 8.4"],"patched":["enterprise_linux_server_v_7_els","enterprise_linux_server_optional_v_7_els","openshift_container_platform 4.12","middleware_containers_for_openshift","openshift_container_platform 4.13","openshift_container_platform 4.14","openshift_container_platform 4.15","openshift_container_platform 4.16","openshift_container_platform 4.17","openshift_container_platform 4.18","openshift_container_platform 4.19","enterprise_linux_appstream_eus_v_10_0","enterprise_linux_appstream_v_10","enterprise_linux_appstream_e4s_v_9_0","enterprise_linux_appstream_e4s_v_9_2","enterprise_linux_appstream_eus_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_v_8","enterprise_linux_baseos_aus_v_8_2","enterprise_linux_baseos_aus_v_8_4","enterprise_linux_baseos_eus_extension_v_8_4","enterprise_linux_baseos_aus_v_8_6","enterprise_linux_baseos_e4s_v_8_6","enterprise_linux_baseos_tus_v_8_6","enterprise_linux_baseos_e4s_v_8_8","enterprise_linux_baseos_tus_v_8_8","enterprise_linux_baseos_e4s_v_9_0","enterprise_linux_baseos_e4s_v_9_2","enterprise_linux_baseos_eus_v_9_4","enterprise_linux_baseos_eus_v_9_6","enterprise_linux_baseos_v_9","enterprise_linux_crb_v_8","codeready_linux_builder_eus_v_9_4","cert_manager_support_for_red_hat_openshift_release 1.20","ai_inference_server 3.2","ai_inference_server 3.3","discovery 2"],"published":"2026-03-19","updated":"2026-10-14","sourceUpdated":"2026-10-14T20:17:45.680","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-4424","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:10065","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:10097","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:11768","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:12071","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:12274","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:13812","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14773","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:14937","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:15087","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:16008","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:16009","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:16030","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:16174","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:17596","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:19724","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:19725","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:20040","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:21690","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:25096","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:72502","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82304","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82322","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82347","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82354","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82372","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82857","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82888","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8492","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8510","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8517","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8521","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8534","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8864","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8865","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8866","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8867","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8873","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8908","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:8944","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:9026","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:9592","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:9832","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-4424","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2449006","label":"secalert@redhat.com"},{"url":"https://github.com/libarchive/libarchive/pull/2898","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:10065","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:10097","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:11768","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:12071","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:12274","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:13812","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:14773","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:14937","label":"0b0ca135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Overview\n\nA flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.\n\n## Affected\n\n- `libarchive`\n- `hardened_images`\n- `openshift_container_platform = 4.0`\n- `openshift_container_platform = 4.16`\n- `openshift_container_platform_for_arm64 = 4.16`\n- `openshift_container_platform_for_power = 4.16`\n- `enterprise_linux = 6.0`\n- `enterprise_linux = 7.0`\n- `enterprise_linux = 8.0`\n- `enterprise_linux = 9.0`\n- `enterprise_linux = 10.0`\n- `enterprise_linux_server_aus = 8.2`\n- `enterprise_linux_server_aus = 8.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:8517** · Red Hat · fixed in: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS) · released 2026-04-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:8517)\n- **RHSA-2026:12274** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.12 · released 2026-05-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:12274)\n- **RHSA-2026:13812** · Red Hat · fixed in: Middleware Containers for OpenShift · released 2026-05-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:13812)\n- **RHSA-2026:21690** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.13 · released 2026-06-04 · [advisory](https://access.redhat.com/errata/RHSA-2026:21690)\n- **RHSA-2026:15087** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.14 · released 2026-05-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:15087)\n- **RHSA-2026:14773** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.15 · released 2026-05-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:14773)\n- **RHSA-2026:10097** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.16 · released 2026-04-30 · [advisory](https://access.redhat.com/errata/RHSA-2026:10097)\n- **RHSA-2026:17596** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.17 · released 2026-05-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:17596)\n- **RHSA-2026:12071** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.18 · released 2026-05-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:12071)\n- **RHSA-2026:20040** · Red Hat · fixed in: Red Hat OpenShift Container Platform 4.19 · released 2026-05-27 · [advisory](https://access.redhat.com/errata/RHSA-2026:20040)\n- **RHSA-2026:8865** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0) · released 2026-04-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:8865)\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 6 · updated 2026-10-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4424.json)","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}