Red Hat Linux Red Hat Enterprise Linux Vulnerabilities & Security Advisories
1213 advisories tracked · Red Hat Security Data API · 3 listed in the CISA Known Exploited Vulnerabilities catalog
Every row below is a published Red Hat Linux advisory that VulniPulse classified as Red Hat Enterprise Linux, with the CVEs, affected and fixed releases and exploitation status the vendor stated. Severity mix: 31 critical, 789 high, 373 medium, 17 low.
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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 Linux Red Hat Enterprise Linux advisories
High [CVE-2026-42043] NO_PROXY bypass via crafted URL
NO_PROXY bypass via crafted URL. Red Hat rates this important (CVSS 7.2). Weakness: CWE-918. Affected package(s): openshift-service-mesh/kiali-rhel9:1778164042, rhoai/odh-mod-arch-model-registry-rhel9:1780467147, openshift4/ose-agent-installer-ui-rhel9:1778539338, satellite/iop-advisor-frontend-rhel9:1781181673, openshift-service-mesh/kiali-rhel8:1778191378, rhacm2/console-rhel9:1780600823. Resolved in Red Hat advisory RHSA-2026:14937 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; and 32 more.
High [CVE-2026-42044] Invisible JSON Response Tampering via Prototype Pollution Gadget
Invisible JSON Response Tampering via Prototype Pollution Gadget. Red Hat rates this important (CVSS 7.4). Weakness: CWE-915. Affected package(s): openshift-service-mesh/kiali-rhel9:1778164042, network-observability/network-observability-console-plugin-rhel9:1780556069, satellite/iop-advisor-frontend-rhel9:1781181673, rhacm2/console-rhel9:1780600823, devspaces/code-rhel9:1779814592, multicluster-engine/console-mce-rhel9:1778383863. Resolved in Red Hat advisory RHSA-2026:26068 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; and 36 more.
High [CVE-2026-42033] HTTP Transport Hijacking via Prototype Pollution
HTTP Transport Hijacking via Prototype Pollution. Red Hat rates this important (CVSS 7.4). Weakness: CWE-915. Affected package(s): openshift-service-mesh/kiali-rhel9:1778164042, rhoai/odh-mod-arch-model-registry-rhel9:1780467147, openshift4/ose-agent-installer-ui-rhel9:1778539338, satellite/iop-advisor-frontend-rhel9:1781181673, openshift-service-mesh/kiali-rhel8:1778191378, rhacm2/console-rhel9:1780600823. Resolved in Red Hat advisory RHSA-2026:14937 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Security for Kubernetes 4.10; Red Hat Advanced Cluster Security for Kubernetes 4.9; and 35 more.
High [CVE-2026-41316] Arbitrary code execution via deserialization bypass
Arbitrary code execution via deserialization bypass. Red Hat rates this important (CVSS 8.1). Weakness: CWE-502. Affected package(s): ruby, ruby4.0, ruby:3.3, ruby:4.0. Resolved in Red Hat advisory RHSA-2026:20614 — 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-2026-31663] hold dev ref until after transport_finish NF_HOOK
hold dev ref until after transport_finish NF_HOOK. Red Hat rates this important (CVSS 7). Weakness: CWE-826. 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 10; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
High [CVE-2026-31641] Fix RxGK token loading to check bounds
Fix RxGK token loading to check bounds. Red Hat rates this important (CVSS 7.3). Weakness: CWE-190. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:27288 — update the affected packages (`sudo dnf update`). Affected product named by the advisory: Red Hat Enterprise Linux 10.
High [CVE-2026-31617] validate minimum block_len in ncm_unwrap_ntb()
validate minimum block_len in ncm_unwrap_ntb(). Red Hat rates this important (CVSS 7). 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 10.
High [CVE-2026-31607] validate number_of_packets in usbip_pack_ret_submit()
validate number_of_packets in usbip_pack_ret_submit(). Red Hat rates this important (CVSS 7.3). Weakness: CWE-805. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:19569 — 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 9.6 Extended Update Support.
High [CVE-2026-34003] X.Org X server: Information exposure and denial of service via out-of-bounds memory access
X.Org X server: Information exposure and denial of service via out-of-bounds memory access. Red Hat rates this important (CVSS 7.8). Weakness: CWE-125. Affected package(s): tigervnc, xorg-x11-server-Xwayland, xorg-x11-server. Resolved in Red Hat advisory RHSA-2026:24341 — 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 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-34001] X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption
X.Org X server: Use-after-free vulnerability leads to server crash and potential memory corruption. Red Hat rates this important (CVSS 7.8). Weakness: CWE-825. Affected package(s): tigervnc, xorg-x11-server-Xwayland, xorg-x11-server. Resolved in Red Hat advisory RHSA-2026:24341 — 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 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-33999] X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling
X.Org X server: Denial of Service via integer underflow in XKB compatibility map handling. Red Hat rates this important (CVSS 7.8). Weakness: CWE-191. Affected package(s): tigervnc, xorg-x11-server-Xwayland, xorg-x11-server. Resolved in Red Hat advisory RHSA-2026:24341 — 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 6 Extended Lifecycle Support - EXTENSION; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; and 11 more.
High [CVE-2026-41651] race condition vulnerability leads to arbitrary package installation as root
race condition vulnerability leads to arbitrary package installation as root. Red Hat rates this important (CVSS 8.8). Weakness: CWE-367. Affected package(s): PackageKit. Resolved in Red Hat advisory RHSA-2026:11504 — 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 9 more.
High [CVE-2026-31488] Do not skip unrelated mode changes in DSC validation
Do not skip unrelated mode changes in DSC validation. Red Hat rates this important (CVSS 7.8). Weakness: CWE-1288. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:27354 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; and 2 more.
High [CVE-2026-31474] fix tx.buf use-after-free in isotp_sendmsg()
fix tx.buf use-after-free in isotp_sendmsg(). Red Hat rates this important (CVSS 7.8). Weakness: CWE-364. 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 10.0 Extended Update Support; Red Hat Enterprise Linux 9.
High [CVE-2026-31431] algif_aead - Revert to operating out-of-place
algif_aead - Revert to operating out-of-place. Red Hat rates this important (CVSS 7.8). Weakness: CWE-1288. Affected package(s): kernel, rhcos, kernel-rt, kpatch-patch. Resolved in Red Hat advisory RHSA-2026:13729 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: NVIDIA for RHEL 10; Red Hat OpenShift Container Platform 4.12; Red Hat OpenShift Container Platform 4.13; Red Hat OpenShift Container Platform 4.14; and 63 more.
High [CVE-2026-22016] Enhance Path Factories Redux (Oracle CPU 2026-04)
Enhance Path Factories Redux (Oracle CPU 2026-04). Red Hat rates this important (CVSS 7.5). Weakness: CWE-611. Affected package(s): java. Resolved in Red Hat advisory RHSA-2026:11829 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Build of OpenJDK 17.0.19; Red Hat Build of OpenJDK 17.0.9; Red Hat Build of OpenJDK 21.0.11; Red Hat Build of OpenJDK 25.0.3; and 20 more.
High [CVE-2026-34282] Enhance TLS connection handling (Oracle CPU 2026-04)
Enhance TLS connection handling (Oracle CPU 2026-04). Red Hat rates this important (CVSS 7.5). Weakness: CWE-835. Affected package(s): java. Resolved in Red Hat advisory RHSA-2026:11829 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat Build of OpenJDK 17.0.19; Red Hat Build of OpenJDK 17.0.9; Red Hat Build of OpenJDK 21.0.11; Red Hat Build of OpenJDK 25.0.3; and 17 more.
High [CVE-2026-40895] Information disclosure via cross-domain redirects
Information disclosure via cross-domain redirects. Red Hat rates this important (CVSS 7.5). Weakness: CWE-212. Affected package(s): openshift-service-mesh/kiali-rhel9:1778164042, rhoai/odh-mod-arch-model-registry-rhel9:1780467147, rhoai/odh-mod-arch-gen-ai-rhel9:1778473763, devspaces/openvsx-rhel9:1779528224, rhoai/odh-dashboard-rhel9:1779189627, cryostat/cryostat-openshift-console-plugin-rhel9:4.2.0. Resolved in Red Hat advisory RHSA-2026:13826 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Security for Kubernetes 4.10; and 39 more.
High [CVE-2026-6786] Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Memory safety bugs fixed in Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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 9 more.
High [CVE-2026-6785] Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150
Memory safety bugs fixed in Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird ESR 140.10, Firefox 150 and Thunderbird 150. Red Hat rates this important (CVSS 7.5). Weakness: CWE-787. Affected package(s): thunderbird, firefox. Resolved in Red Hat advisory RHSA-2026:10757 — 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 9 more.