RHSA-2026:42550 - Security Advisory

トピック

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

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.

説明

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: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117)
• kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp (CVE-2026-53071)

Bug Fix(es) and Enhancement(s):

• [rhel-8] WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected - at: vmd_pci_write+0x85/0xe0 - deadlock (JIRA:RHEL-174916)

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.

解決策

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

影響を受ける製品

• Red Hat Enterprise Linux for Real Time 8 x86_64
• Red Hat Enterprise Linux for Real Time for NFV 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64

修正

• BZ - 2482576 - CVE-2026-46117 kernel: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss()
• BZ - 2492458 - CVE-2026-53071 kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp

CVE

• CVE-2026-46117
• CVE-2026-53071

参考資料

• https://access.redhat.com/security/updates/classification/#important