RHSA-2026:77215 — Security Advisory

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

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Severity

Important

Red Hat Product Security

RHEL 9

Products

Official CSAF product identity

Published · October 7, 2026

Updated · November 2, 2026

Topic

An update for kernel 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.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: linux/dim: Fix divide by 0 in RDMA DIM (CVE-2022-49670)
kernel: ALSA: 6fire: fix use-after-free on disconnect (CVE-2026-31581)
kernel: ip6_gre: Use cached t->net in ip6erspan_changelink() (CVE-2026-46120)
kernel: sctp: purge outqueue on stale COOKIE-ECHO handling (CVE-2026-52924)
kernel: netfilter: conntrack: remove sprintf usage (CVE-2026-53002)
kernel: ice: fix double-free of tx_buf skb (CVE-2026-53009)
kernel: zram: fix use-after-free in zram_bvec_write_partial() (CVE-2026-53185)
kernel: i2c: stub: Reject I2C block transfers with invalid length (CVE-2026-64191)
kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)
kernel: netfilter: flowtable: publish GC-visible tuple last (CVE-2026-74746)

Bug Fix(es) and Enhancement(s):

RT scheduler livelock: migrate-disabled task at pushable-list head causes repeated RT push/stopper retries, starving a critical RT task (remaining issue after CVE-2026-45919 fix in 94894c9c477e) (JIRA:RHEL-257978)

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.