RHSA-2026:74438 — Security Advisory
Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · October 2, 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 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 packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
-
kernel: RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send (CVE-2026-45856)
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kernel: KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path (CVE-2026-63794)
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kernel: futex: Fix race on the initial mm->futex.phash.ref allocation (CVE-2026-80775)
Bug Fix(es) and Enhancement(s):
-
Backport of protocol attribute to IP addresses (IFA_PROTO) [rhel-9.8.z] (JIRA:RHEL-169936)
-
try_charge_memcg() refactor in kernel 5.14.0-687.36.1 causes premature memcg OOM with GiB of clean page cache present [rhel-9.8.z] (JIRA:RHEL-269060)
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.