Issued at: 2026-11-12
Updated at: 2026-11-12
Advisory content derived from Red Hat RHSA-2026:98100, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: kernel-rt security update
Description
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: Revert "net/smc: Introduce TCP ULP support" (CVE-2026-46330)
* kernel: Linux kernel: PPP over L2TP Use-After-Free vulnerability (CVE-2026-68398)
* kernel: openvswitch: fix GSO userspace truncation underflow (CVE-2026-68123)
* kernel: Bluetooth: mgmt: fix UAF in pair command cancellation (CVE-2026-74510)
* kernel: net: bridge: mcast: fix use-after-free of a master VLAN's multicast context (CVE-2026-80842)
* kernel: ALSA: seq: midi: Serialize input teardown with event_input (CVE-2026-90207)
* kernel: ALSA: pcm: Serialize PCM mmap with buffer reallocation to fix page UAF (CVE-2026-98116)
* kernel: s390/boot: Avoid IPL parameter append past command line (CVE-2026-98403)
* kernel: kernel: Denial of Service via unvalidated task in iSCSI management responses (CVE-2026-99152)
* kernel: kernel: Denial of service via unvalidated task tag in iSCSI Reject PDU (CVE-2026-99153)
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.