RHSA-2026:1143 — 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: Linux kernel: Use-after-free in device mapper due to race condition in zone reporting (CVE-2025-38141)

• kernel: Linux kernel use-after-free in eventpoll (CVE-2025-38349)

• kernel: drm/xe: Fix vm_bind_ioctl double free bug (CVE-2025-38731)

• kernel: Linux kernel: vsock vulnerability may lead to memory corruption (CVE-2025-40248)

• kernel: mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258)

• kernel: Linux kernel: Out-of-bounds write in Bluetooth MGMT can lead to information disclosure and denial of service (CVE-2025-40294)

• kernel: net: atlantic: fix fragment overflow handling in RX path (CVE-2025-68301)

• kernel: Bluetooth: hci_sock: Prevent race in socket write iter and sock bind (CVE-2025-68305)

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.