RHSA-2026:7100 — Security Advisory
Red Hat Security Advisory: kernel-rt security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · April 9, 2026
Updated · October 29, 2026
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
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kernel: Linux kernel: Use-after-free in BPF sockmap can lead to denial of service and privilege escalation (CVE-2025-38154)
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kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem (CVE-2025-38180)
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kernel: Kernel: Double free vulnerability in exFAT filesystem can lead to denial of service (CVE-2025-38206)
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kernel: Linux kernel:A use-after-free in bridge multicast in br_multicast_port_ctx_init (CVE-2025-38248)
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kernel: macvlan: fix error recovery in macvlan_common_newlink() (CVE-2026-23209)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.