SB2026020912 - Red Hat Enterprise Linux 8 update for kernel
Published: February 9, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 secuirty vulnerabilities.
1) Use of uninitialized resource (CVE-ID: CVE-2025-38403)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to use of uninitialized resource within the vmci_transport_packet_init() function in net/vmw_vsock/vmci_transport.c. A local user can perform a denial of service (DoS) attack.
2) Input validation error (CVE-ID: CVE-2025-40170)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the sk_clone_lock(), sk_dst_gso_max_size() and sk_setup_caps() functions in net/core/sock.c. A local user can perform a denial of service (DoS) attack.
3) Use-after-free (CVE-ID: CVE-2025-40135)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ip6_autoflowlabel() and ip6_xmit() functions in net/ipv6/ip6_output.c. A local user can escalate privileges on the system.
4) Use-after-free (CVE-ID: CVE-2025-40158)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ip6_finish_output2() and ip6_finish_output() functions in net/ipv6/ip6_output.c. A local user can escalate privileges on the system.
5) Input validation error (CVE-ID: CVE-2025-40269)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the snd_usb_endpoint_set_params() function in sound/usb/endpoint.c. A local user can perform a denial of service (DoS) attack.
6) 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.
7) 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.
8) NULL pointer dereference (CVE-ID: CVE-2026-22998)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the nvmet_tcp_handle_h2c_data_pdu() function in drivers/nvme/target/tcp.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.