RHSA-2026:2212 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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 packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: net: openvswitch: fix nested key length validation in the set() action (CVE-2025-37789)

• kernel: Linux kernel: irqchip/gic-v2m use-after-free vulnerability (CVE-2025-37819)

• kernel: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem (CVE-2025-38022)

• kernel: Linux kernel: RDMA/rxe use-after-free vulnerability leading to potential arbitrary code execution (CVE-2025-38024)

• kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation (CVE-2025-38415)

• kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it (CVE-2025-38403)

• kernel: Linux kernel: Denial of Service in ATM CLIP module via infinite recursion (CVE-2025-38459)

• kernel: Linux kernel: Data corruption and system instability due to improper io_uring/net buffer handling (CVE-2025-38730)

• kernel: Linux kernel: Denial of Service via out-of-bounds read in USB configuration parsing (CVE-2025-39760)

• kernel: net: use dst_dev_rcu() in sk_setup_caps() (CVE-2025-40170)

• kernel: ipv6: use RCU in ip6_xmit() (CVE-2025-40135)

• kernel: Bluetooth: ISO: Fix possible UAF on iso_conn_free (CVE-2025-40141)

• kernel: ipv6: use RCU in ip6_output() (CVE-2025-40158)

• kernel: Linux kernel: Use-after-free in proc_readdir_de() can lead to privilege escalation or denial of service. (CVE-2025-40271)

• kernel: Linux kernel ALSA USB audio driver: Buffer overflow leading to information disclosure and denial of service (CVE-2025-40269)

• kernel: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once (CVE-2025-40318)

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.