Red Hat Linux Security Advisories & Vulnerabilities
16039 advisories tracked · Red Hat Security Data API · direct feeds checked every minute; rate-limited sources checked less often
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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
High [CVE-2026-27143] possible memory corruption after bound check elimination
possible memory corruption after bound check elimination. Red Hat rates this moderate (CVSS 8.1). Weakness: CWE-733. Affected package(s): openshift4/openshift-route-controller-manager-rhel8:1781867531, openshift4/ose-gcp-cloud-controller-manager-rhel9:1781927538, openshift4/ose-nutanix-machine-controllers-rhel9:1781926777, openshift4/ose-cluster-bootstrap-rhel9:1779251452, openshift4/ose-cluster-policy-controller-rhel9:1779258265, openshift4/ose-machine-api-provider-aws-rhel9:1779249874. Resolved in Red Hat advisory RHSA-2026:10704 — 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-2026-33810] Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application
Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application. Red Hat rates this important (CVSS 8.8). Weakness: CWE-1289. Affected package(s): rhtas/client-server-rhel9:1780399582, golang1, cryostat/cryostat-storage-rhel9:4.1.1, opentelemetry-collector, hawtio-operator-container, web-terminal/web-terminal-exec-rhel9:1780425077. Resolved in Red Hat advisory RHSA-2026:28047 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; RHEM 1.0 for RHEL 9; Red Hat Satellite 6.19 for RHEL 9; Red Hat Enterprise Linux AppStream EUS (v. 10.0); and 87 more.
High [CVE-2026-27144] no-op interface conversion bypasses overlap checking
no-op interface conversion bypasses overlap checking. Red Hat rates this moderate (CVSS 8.1). Weakness: CWE-440. Affected package(s): openshift4/openshift-route-controller-manager-rhel8:1781867531, openshift4/ose-gcp-cloud-controller-manager-rhel9:1781927538, openshift4/ose-nutanix-machine-controllers-rhel9:1781926777, openshift4/ose-cluster-bootstrap-rhel9:1779251452, openshift4/ose-cluster-policy-controller-rhel9:1779258265, openshift4/ose-machine-api-provider-aws-rhel9:1779249874. Resolved in Red Hat advisory RHSA-2026:10704 — 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-2026-32282] Root.Chmod can follow symlinks out of the root
Root. Red Hat rates this moderate (CVSS 7.8). Weakness: CWE-367. Affected package(s): rhc, grafana-pcp, dynflow-utils, host-metering, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, quay/quay-rhel9:1779922205. Resolved in Red Hat advisory RHSA-2026:11507 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 1.
High [CVE-2026-32589] insecure direct object reference in BlobUpload
insecure direct object reference in BlobUpload. Red Hat rates this important (CVSS 7.4). Weakness: CWE-639. Affected package(s): quay/quay-rhel9:1779922205, quay/quay-rhel8:1779811473, quay/quay-rhel8:1779689392, quay/quay-rhel8:1779822261, openshift/mirror-registry-rhel8:1782177012, quay/quay-rhel9:1779204086. Resolved in Red Hat advisory RHSA-2026:23361 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: mirror registry for Red Hat OpenShift 2.0; Red Hat Quay 3.10; Red Hat Quay 3.12; Red Hat Quay 3.14; and 4 more.
High [CVE-2026-32590] remote code execution using pickle deserialization
remote code execution using pickle deserialization. Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-502. Affected package(s): quay/quay-rhel9:1779922205, quay/quay-rhel8:1779811473, quay/quay-rhel8:1779689392, quay/quay-rhel8:1779822261, openshift/mirror-registry-rhel8:1782177012, quay/quay-rhel9:1779204086. Resolved in Red Hat advisory RHSA-2026:23361 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: mirror registry for Red Hat OpenShift 2.0; Red Hat Quay 3.12; Red Hat Quay 3.14; Red Hat Quay 3.15; and 5 more.
High [CVE-2026-6846] Arbitrary code execution via malformed XCOFF object file processing
Arbitrary code execution via malformed XCOFF object file processing. Red Hat rates this important (CVSS 7.8). Weakness: CWE-122. Affected package(s): binutils-main. Resolved in Red Hat advisory RHSA-2026:33527 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Hardened Images; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; and 1 more.
High [CVE-2026-58016] integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml". Red Hat rates this important (CVSS 7.5). Weakness: CWE-191. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released. Affected products named by the advisory: Red Hat Enterprise Linux 6; Red Hat Update Infrastructure 5; Red Hat Discovery 2; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 17 more.
High [CVE-2026-31411] fix crash due to unvalidated vcc pointer in sigd_send()
fix crash due to unvalidated vcc pointer in sigd_send(). Red Hat rates this moderate (CVSS 7.1). Weakness: CWE-822. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:33285 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 9.
Medium [CVE-2026-2377] Server-Side Request Forgery via log export functionality
Server-Side Request Forgery via log export functionality. Red Hat rates this important (CVSS 6.5). Weakness: CWE-918. Affected package(s): quay/quay-rhel8:1779811473, quay/quay-rhel8:1779689392, quay/quay-rhel8:1779822261, quay/quay-rhel9:1779204086, quay/quay-rhel8:1779811412, quay/quay-rhel8:1780891395. Resolved in Red Hat advisory RHSA-2026:23361 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Quay 3.10; Red Hat Quay 3.12; Red Hat Quay 3.14; Red Hat Quay 3.15; and 3 more.
Medium [CVE-2025-57847] privilege escalation via excessive group writable /etc/passwd permissions
A container privilege escalation flaw was found in certain Ansible Automation Platform images. This issue arises from the /etc/passwd file being created with group-writable permissions during the build process. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This vulnerability allows an attacker to add a new user with any arbitrary UID, including UID 0, gaining full root privileges within the container. Red Hat Product Security has rated this vulnerability as moderate severity for affected products which run on OpenShift. The vulnerability allows for potential privilege escalation within a container, but OpenShift's default, multi-layered security posture effectively mitigates this risk. The primary controls include the default Security Context Constraints (SCC), which severely limit a container's permissions from the start, and SELinux, which enforces mandatory access control to ensure strict isolation. While other container runtime environments may have different controls available and require case-by-case analysis, OpenShift's built-in defenses are designed to prevent this type of attack. Out of Box RHEL configuration isolates a single process inside a container.
Medium [CVE-2026-32281] Go crypto/x509: Denial of Service via inefficient certificate chain validation
Go crypto/x509: Denial of Service via inefficient certificate chain validation. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-1050. Affected package(s): grafana-pcp, skopeo, host-metering, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, openshift-service-mesh/kiali-rhel9:1779520708, quay/quay-rhel9:1779922205. Resolved in Red Hat advisory RHSA-2026:10217 — 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 7; Red Hat Enterprise Linux 8.
Medium [CVE-2026-32288] Go's archive/tar package: Denial of Service via maliciously-crafted archive
Go's archive/tar package: Denial of Service via maliciously-crafted archive. Red Hat rates this moderate (CVSS 4.3). Weakness: CWE-770. Affected package(s): golang1. Resolved in Red Hat advisory RHSA-2026:7385 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-32289] Cross-Site Scripting (XSS) via improper context and brace depth tracking in JS template literals
Cross-Site Scripting (XSS) via improper context and brace depth tracking in JS template literals. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-79. Affected package(s): golang1. Resolved in Red Hat advisory RHSA-2026:7385 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux.
Medium [CVE-2026-32591] server-side request forgery in proxy cache upstream registry configuration
server-side request forgery in proxy cache upstream registry configuration. Red Hat rates this important (CVSS 5.2). Weakness: CWE-918. Affected package(s): quay/quay-rhel9:1780604033. Resolved in Red Hat advisory RHSA-2026:24833 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Quay 3.17; mirror registry for Red Hat OpenShift 2; Red Hat Quay 3.9; Red Hat Quay 3.16; and 5 more.
Critical [CVE-2026-34078] Arbitrary code execution via crafted symlinks in sandbox-expose options
Arbitrary code execution via crafted symlinks in sandbox-expose options. Red Hat rates this important (CVSS 9). Weakness: CWE-59. Affected package(s): flatpak. Resolved in Red Hat advisory RHSA-2026:21757 — 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.
Critical [CVE-2026-34582] Client authentication bypass in TLS 1.3 implementation
Client authentication bypass in TLS 1.3 implementation. Red Hat rates this important (CVSS 9.1). Weakness: CWE-166. 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 10.
Critical [CVE-2026-34580] Certificate validation bypass due to incorrect certificate matching
Certificate validation bypass due to incorrect certificate matching. Red Hat rates this important (CVSS 9.1). Weakness: CWE-295. 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 10.
Critical [CVE-2026-4631] Unauthenticated remote code execution due to SSH command-line argument injection
Unauthenticated remote code execution due to SSH command-line argument injection. Red Hat rates this critical (CVSS 9.8). Weakness: CWE-78. Affected package(s): cockpit. Resolved in Red Hat advisory RHSA-2026:7383 — 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 9.6 Extended Update Support.
Critical [CVE-2026-5861] Use after free in V8
Use after free in V8. Red Hat rates this important (CVSS 9.6). Weakness: CWE-825. 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.
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