RHSA-2025:21112 — 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: firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails (CVE-2022-50087)

• kernel: sunrpc: fix client side handling of tls alerts (CVE-2025-38571)

• kernel: sunrpc: fix handling of server side tls alerts (CVE-2025-38566)

• kernel: vsock/virtio: Validate length in packet header before skb_put() (CVE-2025-39718)

• kernel: ipv6: sr: Fix MAC comparison to be constant-time (CVE-2025-39702)

• kernel: x86/vmscape: Add conditional IBPB mitigation (CVE-2025-40300)

• kernel: efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare (CVE-2025-39817)

• kernel: pstore/ram: Check start of empty przs during init (CVE-2023-53331)

• kernel: fs: fix UAF/GPF bug in nilfs_mdt_destroy (CVE-2022-50367)

• kernel: crypto: seqiv - Handle EBUSY correctly (CVE-2023-53373)

• kernel: wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result() (CVE-2025-39849)

• kernel: scsi: lpfc: Fix buffer free/clear order in deferred receive path (CVE-2025-39841)

• kernel: crypto: xts - Handle EBUSY correctly (CVE-2023-53494)

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.