SB2026022549 - Red Hat Enterprise Linux 8 update for kernel
Published: February 25, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 18 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2025-38022)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ib_device_notify_register() and ib_register_device() functions in drivers/infiniband/core/device.c. A local user can escalate privileges on the system.
2) Out-of-bounds read (CVE-ID: CVE-2025-38415)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the squashfs_fill_super() function in fs/squashfs/super.c. A local user can perform a denial of service (DoS) attack.
3) Improper locking (CVE-ID: CVE-2025-38459)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the clip_mkip() function in net/atm/clip.c. A local user can perform a denial of service (DoS) attack.
4) Out-of-bounds read (CVE-ID: CVE-2025-39760)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the usb_parse_ss_endpoint_companion() function in drivers/usb/core/config.c. A local user can perform a denial of service (DoS) attack.
5) Input validation error (CVE-ID: CVE-2025-39933)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the recv_done() function in fs/smb/client/smbdirect.c. A local user can perform a denial of service (DoS) attack.
6) Buffer overflow (CVE-ID: CVE-2023-53539)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the save_state() and rxe_requester() functions in drivers/infiniband/sw/rxe/rxe_req.c. A local user can perform a denial of service (DoS) attack.
7) Improper locking (CVE-ID: CVE-2023-53581)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the remove_unready_flow() and mlx5e_tc_del_fdb_flow() functions in drivers/net/ethernet/mellanox/mlx5/core/en_tc.c. A local user can perform a denial of service (DoS) attack.
8) Use-after-free (CVE-ID: CVE-2023-53673)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the hci_cs_disconnect() function in net/bluetooth/hci_event.c. A local user can escalate privileges on the system.
9) Use-after-free (CVE-ID: CVE-2025-40271)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the pde_put(), remove_proc_entry() and remove_proc_subtree() functions in fs/proc/generic.c. A local user can escalate privileges on the system.
10) Out-of-bounds read (CVE-ID: CVE-2025-40304)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the bit_putcs() function in drivers/video/fbdev/core/bitblit.c. A local user can perform a denial of service (DoS) attack.
11) Out-of-bounds read (CVE-ID: CVE-2025-40322)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the bit_putcs_aligned() and bit_putcs_unaligned() functions in drivers/video/fbdev/core/bitblit.c. A local user can perform a denial of service (DoS) attack.
12) Use-after-free (CVE-ID: CVE-2023-53821)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the vti6_tnl_xmit() function in net/ipv6/ip6_vti.c. A local user can escalate privileges on the system.
13) Use-after-free (CVE-ID: CVE-2022-50673)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ext4_truncate() function in fs/ext4/inode.c. A local user can escalate privileges on the system.
14) NULL pointer dereference (CVE-ID: CVE-2023-53833)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the intel_prepare_plane_fb() function in drivers/gpu/drm/i915/display/intel_atomic_plane.c. A local user can perform a denial of service (DoS) attack.
15) Use-after-free (CVE-ID: CVE-2023-53827)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the l2cap_disconnect_req() and l2cap_disconnect_rsp() functions in net/bluetooth/l2cap_core.c. A local user can escalate privileges on the system.
16) Buffer overflow (CVE-ID: CVE-2025-68349)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the pnfs_mark_layout_stateid_invalid() function in fs/nfs/pnfs.c. A local user can perform a denial of service (DoS) attack.
17) Integer overflow (CVE-ID: CVE-2022-50865)
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to integer overflow within the tcp_add_backlog() function in net/ipv4/tcp_ipv4.c. A local user can execute arbitrary code.
18) Use-after-free (CVE-ID: CVE-2026-23074)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the teql_qdisc_init() function in net/sched/sch_teql.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.