Red Hat Linux Linux Kernel Vulnerabilities & Security Advisories
5 advisories tracked · Red Hat Security Data API · 0 listed in the CISA Known Exploited Vulnerabilities catalog
Every row below is a published Red Hat Linux advisory that VulniPulse classified as Linux Kernel, with the CVEs, affected and fixed releases and exploitation status the vendor stated. Severity mix: 1 critical, 1 high, 2 medium.
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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 Linux Kernel advisories
High [CVE-2026-34986] Denial of Service via crafted JSON Web Encryption (JWE) object
Denial of Service via crafted JSON Web Encryption (JWE) object. Red Hat rates this important (CVSS 7.5). Weakness: CWE-131. Affected package(s): odf4/mcg-core-rhel9:1776403991, openshift-service-mesh/pilot-rhel8:1777319850, openshift-service-mesh/istio-cni-rhel8:1777374598, odf4/odf-cloudnative-pg-rhel9-operator:1776406131, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, multicluster-engine/assisted-installer-agent-rhel9:1776351169. Resolved in Red Hat advisory RHSA-2026:25194 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Cryostat 4 on RHEL 9; Red Hat Enterprise Linux AppStream EUS (v. 10.0); Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); and 77 more.
Critical [CVE-2026-33186] Authorization bypass due to improper HTTP/2 path validation
Authorization bypass due to improper HTTP/2 path validation. Red Hat rates this important (CVSS 9.1). Weakness: CWE-551. Affected package(s): rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9:1780078429, odf4/odf-csi-addons-sidecar-rhel9:1781550957, rhtas/trillian-logserver-rhel9:1776243434, openshift4/ose-cluster-olm-rhel9-operator:1779787336, rhdh/rhdh-rhel9-operator:1774544220, openshift4/ose-csi-driver-nfs-rhel9:1778242571. Resolved in Red Hat advisory RHSA-2026:27893 — update the affected packages (`sudo dnf update`). Affected products named by the advisory: Red Hat OpenShift Container Platform 4.16; Red Hat OpenShift Container Platform 4.17; Red Hat OpenShift Container Platform 4.18; Red Hat Satellite 6.16 for RHEL 8; and 113 more.
Medium [CVE-2024-0639] Kernel: potential deadlock on &net->sctp.addr_wq_lock leading to dos
A denial of service vulnerability due to a deadlock was found in sctp_auto_asconf_init in net/sctp/socket.c in the Linux kernel’s SCTP subsystem. This flaw allows guests with local user privileges to trigger a deadlock and potentially crash the system. Affected products named by the advisory: Red Hat Enterprise Linux 9.
Medium [CVE-2024-0443] Kernel: blkio memory leakage due to blkcg and some blkgs are not freed after they are made offline.
A flaw was found in the blkgs destruction path in block/blk-cgroup.c in the Linux kernel, leading to a cgroup blkio memory leakage problem. When a cgroup is being destroyed, cgroup_rstat_flush() is only called at css_release_work_fn(), which is called when the blkcg reference count reaches 0. This circular dependency will prevent blkcg and some blkgs from being freed after they are made offline. This issue may allow an attacker with a local access to cause system instability, such as an out of memory error. Affected products named by the advisory: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.2 Extended Update Support; Red Hat Enterprise Linux 9.
Unknown [CVE-2021-20322] flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was…
A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.