RHSA-2026:0445 — Security Advisory
Red Hat Security Advisory: kernel security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · January 12, 2026
Updated · November 1, 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: HID: multitouch: fix slab out-of-bounds access in mt_report_fixup() (CVE-2025-39806)
-
kernel: audit: fix out-of-bounds read in audit_compare_dname_path() (CVE-2025-39840)
-
kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory (CVE-2025-39883)
-
kernel: sctp: avoid NULL dereference when chunk data buffer is missing (CVE-2025-40240)
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.