RHSA-2025:16540 — Security Advisory
Red Hat Security Advisory: kpatch-patch-5_14_0-427_31_1, kpatch-patch-5_14_0-427_44_1, kpatch-patch-5_14_0-427_55_1, kpatch-patch-5_14_0-427_68_2, and kpatch-patch-5_14_0-427_84_1 security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · September 24, 2025
Updated · October 29, 2026
Topic
An update for multiple packages is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.
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
This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel. This patch module is targeted for kernel-5.14.0-427.44.1.el9_4.
Security Fix(es):
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kernel: net_sched: hfsc: Fix a UAF vulnerability in class with netem as child qdisc (CVE-2025-37890)
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kernel: net_sched: hfsc: Address reentrant enqueue adding class to eltree twice (CVE-2025-38001)
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kernel: sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue() (CVE-2025-38000)
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kernel: net/sched: Always pass notifications when child class becomes empty (CVE-2025-38350)
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kernel: i2c/designware: Fix an initialization issue (CVE-2025-38380)
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.