Red Hat Linux Security Advisories & CVEs
4894 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited backstops use a safe source cadence
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Security advisories for your Red Hat release
Pick your distribution release to see every advisory issued for it and its severity mix. Fixes ship as errata — keep the system patched. This is the release's advisory history, not a per-package scan.
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Red Hat Security Data API
Red Hat Enterprise Linux errata (RHSA) via the official Red Hat Security Data API — CVE severity, CVSS and affected packages. A credential-free official source.
Latest Red Hat advisories
High [CVE-2026-23884] Denial of Service and potential code execution via use-after-free vulnerability
Denial of Service and potential code execution via use-after-free vulnerability. Red Hat rates this important (CVSS 7.6). Weakness: CWE-416. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:2952 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-23883] Arbitrary code execution and denial of service via malicious server
Arbitrary code execution and denial of service via malicious server. Red Hat rates this important (CVSS 7.6). Weakness: CWE-416. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:2952 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; and 3 more.
High [CVE-2026-23534] Arbitrary code execution and denial of service via client-side heap buffer overflow
Arbitrary code execution and denial of service via client-side heap buffer overflow. Red Hat rates this important (CVSS 7.6). Weakness: CWE-122. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:2952 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Enterprise Linux 9.6 Extended Update Support; and 1 more.
High [CVE-2026-23533] Heap buffer overflow leads to denial of service and potential code execution
Heap buffer overflow leads to denial of service and potential code execution. Red Hat rates this important (CVSS 7.6). Weakness: CWE-122. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:2952 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-23532] Denial of Service and potential code execution via client-side heap buffer overflow
Denial of Service and potential code execution via client-side heap buffer overflow. Red Hat rates this important (CVSS 7.6). Weakness: CWE-122. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:2952 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-23531] Heap buffer overflow via crafted RDPGFX surface updates leads to denial of service and potential code execution.
Heap buffer overflow via crafted RDPGFX surface updates leads to denial of service and potential code execution.. Red Hat rates this important (CVSS 7.6). Weakness: CWE-122. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:2952 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-23530] Heap buffer overflow leading to denial of service and potential code execution from a malicious server.
Heap buffer overflow leading to denial of service and potential code execution from a malicious server.. Red Hat rates this important (CVSS 7.6). Weakness: CWE-122. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:2952 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2025-68616] WeasyPrint Server-Side Request Forgery (SSRF)
WeasyPrint Server-Side Request Forgery (SSRF). Red Hat rates this important (CVSS 7.5). Weakness: CWE-918. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Ansible Automation Platform 2.
High [CVE-2026-0603] Information disclosure and data deletion via second-order SQL injection
Information disclosure and data deletion via second-order SQL injection. Red Hat rates this important (CVSS 8.3). Weakness: CWE-89. Affected package(s): eap7-hibernate, eap7-wildfly, org.hibernate/hibernate-core:5.3.38.Final-redhat. Resolved in Red Hat advisory RHSA-2026:4924 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7; Red Hat JBoss Enterprise Application Platform 7.3 EUS for RHEL 7; Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7; Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 8; and 10 more.
High [CVE-2026-23745] Arbitrary file overwrite and symlink poisoning via unsanitized linkpaths in archives
Arbitrary file overwrite and symlink poisoning via unsanitized linkpaths in archives. Red Hat rates this important (CVSS 8.2). Weakness: CWE-22. Affected package(s): network-observability/network-observability-console-plugin-rhel9:1771227650, devspaces/udi-rhel9:1774451954, rhtas/rekor-search-ui-rhel9:1770107452, rhtas/rekor-search-ui-rhel9:1770739056, rhoai/odh-dashboard-rhel9:1779189627, linux-sgx. Resolved in Red Hat advisory RHSA-2026:19712 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.3; and 19 more.
High [CVE-2021-47839] Remote Code Execution via persistent cross-site scripting
Remote Code Execution via persistent cross-site scripting. Red Hat rates this important. Weakness: CWE-79. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-23490] Denial of Service due to memory exhaustion from malformed RELATIVE-OID
Denial of Service due to memory exhaustion from malformed RELATIVE-OID. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Affected package(s): python-pyasn1, ansible-automation-platform, fence-agents, rhelai3/bootc-azure-rocm-rhel9:1778677745, resource-agents, automation-controller. Resolved in Red Hat advisory RHSA-2026:5606 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Ansible Automation Platform 2.5 for RHEL 8; Red Hat Ansible Automation Platform 2.5 for RHEL 9; Red Hat Ansible Automation Platform 2.6 for RHEL 9; Red Hat Enterprise Linux 10.0 Extended Update Support; and 34 more.
High [CVE-2025-62291] Arbitrary Code Execution and Denial of Service via crafted EAP-MSCHAPv2 message
Arbitrary Code Execution and Denial of Service via crafted EAP-MSCHAPv2 message. Red Hat rates this important (CVSS 8.1). Weakness: CWE-191. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-23527] HTTP Request Smuggling due to improper case-sensitive parsing of Transfer-Encoding header
HTTP Request Smuggling due to improper case-sensitive parsing of Transfer-Encoding header. Red Hat rates this important (CVSS 8.9). Weakness: CWE-444. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected product named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-22775] Denial of Service due to improper input validation
Denial of Service due to improper input validation. Red Hat rates this important (CVSS 7.5). Weakness: CWE-405. Affected package(s): rhtas/rekor-search-ui-rhel9:1770107452, rhtas/rekor-search-ui-rhel9:1770739056. Resolved in Red Hat advisory RHSA-2026:2926 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.2; Red Hat Trusted Artifact Signer 1.3; Red Hat Build of Podman Desktop - Tech Preview.
High [CVE-2026-22774] Denial of Service due to excessive resource consumption from untrusted input
Denial of Service due to excessive resource consumption from untrusted input. Red Hat rates this important (CVSS 7.5). Weakness: CWE-405. Affected package(s): rhtas/rekor-search-ui-rhel9:1770107452, rhtas/rekor-search-ui-rhel9:1770739056. Resolved in Red Hat advisory RHSA-2026:2926 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Trusted Artifact Signer 1.2; Red Hat Trusted Artifact Signer 1.3; Red Hat Build of Podman Desktop - Tech Preview.
High [CVE-2026-0897] Denial of Service via crafted HDF5 weight loading file
Denial of Service via crafted HDF5 weight loading file. Red Hat rates this important (CVSS 7.6). Weakness: CWE-770. Affected package(s): rhoai/odh-pipeline-runtime-tensorflow-cuda-py312-rhel9:1772093304, rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9:1772093283, rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9:1772093300, rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9:1771502844, rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9:1771502884, rhoai/odh-modelmesh-runtime-adapter-rhel9:1772094445. Resolved in Red Hat advisory RHSA-2026:4271 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.3; Red Hat Trusted Artifact Signer 1.3; Red Hat OpenShift AI (RHOAI).
High [CVE-2026-0861] Integer overflow in memalign leads to heap corruption
Integer overflow in memalign leads to heap corruption. Red Hat rates this low (CVSS 8.1). Weakness: CWE-190. Affected package(s): glibc-main, costmanagement/costmanagement-metrics-rhel9-operator:1770836349, insights-proxy/insights-proxy-container-rhel9:1773685509, rhui5/rhua-rhel9:1773670137, rhui5/cds-rhel9:1773670073, rhui5/haproxy-rhel9:1773672059. Resolved in Red Hat advisory RHSA-2026:3228 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
High [CVE-2026-22859] FreeRDP heap-buffer-overflow
FreeRDP heap-buffer-overflow. Red Hat rates this important (CVSS 7.4). Weakness: CWE-125. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:4439 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-22858] FreeRDP global-buffer-overflow
FreeRDP global-buffer-overflow. Red Hat rates this important (CVSS 7.4). Weakness: CWE-787. Affected package(s): freerdp. Resolved in Red Hat advisory RHSA-2026:4439 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.2 Advanced Update Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.