RHSA-2026:0576 — Security Advisory

An update for kernel is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

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: can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock (CVE-2023-52638)

• kernel: smb: client: fix potential UAF in cifs_stats_proc_write() (CVE-2024-35868)

• kernel: Linux kernel: SCTP use-after-free due to race condition in sendmsg (CVE-2025-23142)

• kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() (CVE-2025-38724)

• kernel: smb: client: fix race with concurrent opens in rename(2) (CVE-2025-39825)

• kernel: can: j1939: implement NETDEV_UNREGISTER notification handler (CVE-2025-39925)

• kernel: net/mlx5e: Check for NOT_READY flag state after locking (CVE-2023-53581)

• kernel: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL (CVE-2023-53680)

• kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses (CVE-2023-53675)

• kernel: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync (CVE-2025-39982)

• kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv() (CVE-2023-53705)

• kernel: usb: dwc3: Fix race condition between concurrent dwc3_remove_requests() call paths (CVE-2025-68287)

• kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285)

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.