Issued at: 2026-10-21
Updated at: 2026-10-21
Advisory content derived from Red Hat RHSA-2026:85774, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: kernel-rt security, bug fix, and enhancement 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: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935)
* kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196)
* kernel: sctp: keep chunk->transport in step with the list it is queued on (CVE-2026-74588)
* kernel: sctp: validate cookie AUTH state before use (CVE-2026-74752)
* kernel: smb: client: reject a tree connect response whose byte count is too small (CVE-2026-89631)
* kernel: sctp: stop processing a packet once its association is deleted (CVE-2026-89479)
* kernel: perf: Fix addr_filter_ranges lifetime (CVE-2026-93817)
* kernel: netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state (CVE-2026-93288)
* kernel: kernel: strparser: use-after-free via msg_timer_work rearm after strp_done() cancellation ()
* kernel: netfilter: flowtable: hold reference on ct until flow is released (CVE-2026-98320)
Bug Fix(es) and Enhancement(s):
* gfs2 filesystem withdrawal rework [Rocky Linux-8] (JIRA:Rocky Linux-129363)
* Batch: z-stream xfrm - rhel-8.10.z (NST-Core-26W38) (JIRA:Rocky Linux-256684)
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.