Linux kernel vulnerabilities enable privilege escalation in RHEL
Red Hat issued patches for multiple Linux kernel vulnerabilities enabling privilege escalation, data confidentiality breaches, security bypass, and denial of service across RHEL versions 8-10.
Sourcecert.ssi.gouv.fr — open the original
What to check
- Applies to
- The 20 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- No exploitation in the wild and no public exploit is recorded for the CVEs named.
CERT-FR has published an advisory regarding multiple vulnerabilities discovered in Red Hat Enterprise Linux kernel packages. The flaws affect a wide range of RHEL distributions across versions 8, 9, and 10, spanning multiple architectures including x86_64, ARM64, IBM z Systems (s390x), and Power (ppc64le). The vulnerabilities enable several attack vectors: privilege escalation, confidential data exposure, security policy bypass, and denial of service conditions.
Red Hat released seven security bulletins between June 1-4, 2026 (RHSA-2026:22334, 22900, 22940, 22964, 23258, 23329, 23395) addressing twenty CVEs spanning years 2024-2026. The affected systems include standard RHEL installations, CodeReady Linux Builder repositories, and specialized support channels such as Extended Update Support (EUS), Extended Life Cycle (ELC), Update Services for SAP Solutions, and Advanced Update Support (AUS) variants.
Organizations running Red Hat Enterprise Linux should prioritize patching according to their support channel and architecture. The breadth of affected versions and the nature of kernel-level vulnerabilities—particularly privilege escalation—warrant expedited remediation. Administrators should consult the referenced Red Hat security bulletins for their specific platform and apply patches through standard yum/dnf update procedures.
Mentioned in this report
Source reporting: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0694
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