RHSA-2026:1148 — Security Advisory
Red Hat Security Advisory: kernel-rt security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · January 26, 2026
Updated · October 30, 2026
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. 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):
-
kernel: Bluetooth: hci_event: call disconnect callback before deleting conn (CVE-2023-53673)
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kernel: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping (CVE-2025-40154)
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kernel: Linux kernel: vsock vulnerability may lead to memory corruption (CVE-2025-40248)
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kernel: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE (CVE-2025-40277)
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.