RHSA-2025:7423 — 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 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.

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

Security Fix(es):

• kernel: io_uring/sqpoll: zero sqd->thread on tctx errors (CVE-2025-21633)

• kernel: soc: qcom: socinfo: Avoid out of bounds read of serial number (CVE-2024-58007)

• kernel: tpm: Change to kvalloc() in eventlog/acpi.c (CVE-2024-58005)

• kernel: rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read (CVE-2024-58069)

• kernel: nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu() (CVE-2025-21927)

• kernel: iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic() (CVE-2025-21993)

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.