RHSA-2026:45192 — Security Advisory

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · July 25, 2026

Updated · October 30, 2026

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.

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 packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026)
kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059)
kernel: drm/xe: Fix error cleanup in xe_exec_queue_create_ioctl() (CVE-2026-52976)
kernel: drm/xe/dma-buf: fix UAF with retry loop (CVE-2026-52950)
kernel: ipv6: fix possible UAF in icmpv6_rcv() (CVE-2026-53006)

Bug Fix(es) and Enhancement(s):

scsi device removal may hang from race with error recovery [rhel-9.8.z] (JIRA:RHEL-187412)
[RHEL9] kvm fixes for 2026-07-21 [rhel-9.8.z] (JIRA:RHEL-213468)

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.