RHSA-2025:17123 — Security Advisory

Red Hat Security Advisory: kernel-rt security update

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Severity

Moderate

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · October 1, 2025

Updated · October 30, 2026

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 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):

  • kernel: usb: dwc3: gadget: check that event count does not exceed event buffer length (CVE-2025-37810)

  • kernel: i40e: fix MMIO write access to an invalid page in i40e_clear_hw (CVE-2025-38200)

  • kernel: vsock: Fix transport_* TOCTOU (CVE-2025-38461)

  • kernel: drm/gem: Acquire references on GEM handles for framebuffers (CVE-2025-38449)

  • kernel: netfilter: nf_conntrack: fix crash due to removal of uninitialised entry (CVE-2025-38472)

  • kernel: smb: client: fix use-after-free in cifs_oplock_break (CVE-2025-38527)

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.

Related CVEs

RHSA-2025:17123 — Red Hat Security Advisory: kernel-rt security update | PulseLinux