Red Hat Linux Security Advisories & Vulnerabilities
16036 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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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, so keep the system patched. This is the release's advisory history, not a per-package scan.
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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
Medium [CVE-2026-4893] Broken ECS source validation bypass
Broken ECS source validation bypass. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-20. Affected package(s): dnsmasq. Resolved in Red Hat advisory RHSA-2026:20589 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8.
High [CVE-2026-42203] Arbitrary code execution via unsandboxed prompt templates
Arbitrary code execution via unsandboxed prompt templates. Red Hat rates this important (CVSS 8.8). Weakness: CWE-94. 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-2026-42271] Authenticated command execution via MCP stdio test endpoints
Authenticated command execution via MCP stdio test endpoints. Red Hat rates this important (CVSS 8.8). Weakness: CWE-78. Affected package(s): rhoai/odh-llama-stack-core-rhel9:1781826406, rhoai/odh-llama-stack-core-rhel9:1782310008, rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9:1781622627. Resolved in Red Hat advisory RHSA-2026:28960 — 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 OpenShift AI 3.4.
High [CVE-2026-42264] Prototype pollution allows information disclosure and request manipulation
Prototype pollution allows information disclosure and request manipulation. Red Hat rates this important (CVSS 7.4). Weakness: CWE-915. Affected package(s): openshift-service-mesh/kiali-ossmc-rhel9:1782201851, advanced-cluster-security/rhacs-main-rhel8:1779371594, advanced-cluster-security/rhacs-main-rhel8:1779293013, openshift-service-mesh/kiali-rhel9:1782201812. Resolved in Red Hat advisory RHSA-2026:20889 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.11; Red Hat Advanced Cluster Security for Kubernetes 4.9; Red Hat OpenShift Service Mesh 3.1; and 26 more.
High [CVE-2026-43330] caam - fix overflow on long hmac keys
caam - fix overflow on long hmac keys. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-125. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:27288 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
High [CVE-2026-43303] clear page->private in free_pages_prepare()
clear page->private in free_pages_prepare(). Red Hat rates this moderate (CVSS 7). Weakness: CWE-909. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:26462 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 9.
High [CVE-2026-43329] strictly check for maximum number of actions
strictly check for maximum number of actions. Red Hat rates this important (CVSS 7.8). Weakness: CWE-770. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:34094 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; and 17 more.
High [CVE-2026-43322] Fix UAF in le_read_features_complete
Fix UAF in le_read_features_complete. Red Hat rates this moderate (CVSS 7). Weakness: CWE-825. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:23329 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
High [CVE-2026-43341] prevent schema length wraparound in trace fill
prevent schema length wraparound in trace fill. Red Hat rates this moderate (CVSS 7). Weakness: CWE-787. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:33215 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 1.
High [CVE-2026-43414] Completely fix fcport double free
Completely fix fcport double free. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-1341. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:34094 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
Medium [CVE-2026-41889] SQL injection via specific SQL query conditions
SQL injection via specific SQL query conditions. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-89. Affected package(s): caddy-main, cosign-main, go-fdo-server-main. Resolved in Red Hat advisory RHSA-2026:16133 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-41506] Information disclosure of HTTP authentication credentials via redirects
Information disclosure of HTTP authentication credentials via redirects. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-601. Affected package(s): syft-main. Resolved in Red Hat advisory RHSA-2026:17669 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-44928] Incorrect URI comparison leading to integrity issues
Incorrect URI comparison leading to integrity issues. Red Hat rates this moderate (CVSS 5.3). Weakness: CWE-1025. Affected package(s): uriparser-main. Resolved in Red Hat advisory RHSA-2026:16341 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Low [CVE-2026-44927] Data integrity issue due to pointer truncation
Data integrity issue due to pointer truncation. Red Hat rates this low (CVSS 2.2). Weakness: CWE-681. Affected package(s): uriparser-main. Resolved in Red Hat advisory RHSA-2026:16341 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
High [CVE-2026-42880] Information disclosure of Kubernetes Secret data via Server-Side Apply dry-run mechanism
Information disclosure of Kubernetes Secret data via Server-Side Apply dry-run mechanism. Red Hat rates this important (CVSS 7.7). Weakness: CWE-201. Affected package(s): openshift-gitops. Resolved in Red Hat advisory RHSA-2026:20943 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift GitOps 1.19; Red Hat OpenShift GitOps 1.20; Red Hat Openshift Data Foundation 4.
High [CVE-2026-39820] Go net/mail: Denial of Service via crafted email inputs
Go net/mail: Denial of Service via crafted email inputs. Red Hat rates this important (CVSS 7.5). Weakness: CWE-606. Affected package(s): openshift-service-mesh/istio-proxyv2-rhel9:1782310747, openshift-service-mesh/istio-proxyv2-rhel9:1782303211, rhdh/rhdh-rhel9-operator:1782767215, openshift-service-mesh/istio-cni-rhel9:1782222217, openshift-service-mesh/istio-pilot-rhel9:1782223341, openshift-service-mesh/istio-pilot-rhel9:1782223138. Resolved in Red Hat advisory RHSA-2026:33120 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Logging Subsystem for Red Hat OpenShift 6.4; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; Red Hat Developer Hub 1.10; and 91 more.
High [CVE-2026-33811] Go net package: Denial of Service via long CNAME response in LookupCNAME
Go net package: Denial of Service via long CNAME response in LookupCNAME. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1341. Affected package(s): golang-github-openprinting-ipp-usb, opentelemetry-collector, golang1, openshift-service-mesh/istio-proxyv2-rhel9:1782310747, openshift-service-mesh/istio-proxyv2-rhel9:1782303211, rhdh/rhdh-rhel9-operator:1782767215. Resolved in Red Hat advisory RHSA-2026:23262 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: RHEM 1.0 for RHEL 9; Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream (v. 9); and 124 more.
High [CVE-2026-42499] Denial of Service via pathological email address parsing
Denial of Service via pathological email address parsing. Red Hat rates this important (CVSS 7.5). Weakness: CWE-1046. Affected package(s): openshift-service-mesh/istio-proxyv2-rhel9:1782310747, openshift-service-mesh/istio-proxyv2-rhel9:1782303211, rhdh/rhdh-rhel9-operator:1782767215, openshift-service-mesh/istio-cni-rhel9:1782222217, openshift-service-mesh/istio-pilot-rhel9:1782223341, openshift-service-mesh/istio-pilot-rhel9:1782223138. Resolved in Red Hat advisory RHSA-2026:33120 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Logging Subsystem for Red Hat OpenShift 6.4; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; Red Hat Developer Hub 1.10; and 90 more.
High [CVE-2026-33814] Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame
Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame. Red Hat rates this important (CVSS 7.5). Weakness: CWE-606. Affected package(s): golang1, cluster-observability-operator/distributed-tracing-console-plugin-pf5-rhel9:1782839981, openshift-service-mesh/istio-cni-rhel9:1782222217, cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9:1782840519, openshift-service-mesh/istio-pilot-rhel9:1782223138, openshift-service-mesh/istio-pilot-rhel9:1782222366. Resolved in Red Hat advisory RHSA-2026:23262 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Openshift Data Foundation 4.22; Red Hat OpenShift Service Mesh 3.1; Red Hat OpenShift Service Mesh 3.2; and 41 more.
High [CVE-2026-8094] Other issue in the WebRTC component
Other issue in the WebRTC component. Red Hat rates this important (CVSS 7.5). Affected package(s): firefox. Resolved in Red Hat advisory RHSA-2026:24509 — 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 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 7 more.
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