RHSA-2026:49031 — Security Advisory
Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · August 1, 2026
Updated · November 4, 2026
Topic
An update for kernel is now available for Red Hat Enterprise Linux 9.6 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
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
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kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026)
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kernel: Arm Processors: Privilege escalation or information disclosure via writes to higher exception level resources (CVE-2025-10263)
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kernel: ipc: limit next_id allocation to the valid ID range (CVE-2026-52923)
Bug Fix(es) and Enhancement(s):
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[RFE] Requesting FOU and GUE/GRE support in RHEL 9 [rhel-9.6.z] (JIRA:RHEL-144986)
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dpll: fix NULL pointer dereference in dpll_msg_add_pin_ref_sync() [rhel-9.6.z] (JIRA:RHEL-212060)
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.