RHSA-2026:2535 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

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

• kernel: Bluetooth: hci_event: call disconnect callback before deleting conn (CVE-2023-53673)

• kernel: drm/sched: Fix potential double free in drm_sched_job_add_resv_dependencies (CVE-2025-40096)

• kernel: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping (CVE-2025-40154)

• kernel: sctp: avoid NULL dereference when chunk data buffer is missing (CVE-2025-40240)

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

• kernel: Linux kernel Bluetooth L2CAP: Kernel crash due to use-after-free via race condition (CVE-2023-53751)

• kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. (CVE-2025-40304)

• kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling (CVE-2025-40322)

• kernel: drm/i915: Fix NULL ptr deref by checking new_crtc_state (CVE-2023-53833)

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

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.