Red Hat alert RHSA-2026:59663-01 (kernel-rt) [LWN.net]

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. 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. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: net: atm: fix crash due to unvalidated vcc pointer in sigd_send() (CVE-2026-31411) * kernel: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath (CVE-2026-43112) * kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels (CVE-2026-46099) * kernel: dm log: fix out-of-bounds write due to region_count overflow (CVE-2026-53059) Bug Fix(es) and Enhancement(s): * [RHEL 9] Bonding reports unknown speed/duplex for tg3 interface (JIRA:RHEL-182765) * vhost: reset the vring metadata cache on vring reconfiguration (JIRA:RHEL-224546) 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. This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

Original: https://access.redhat.com/security/data/csaf/v2/advisories/2026/rhsa-2026_59663.json