SUSE-SU-2021:3360-1

This update for the Linux Kernel 5.3.18-57 fixes several issues.

The following security issues were fixed:

• CVE-2021-31440: Fixed a lack of proper validation of user-supplied eBPF programs prior to executing them. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. (bsc#1190127).
• CVE-2021-38160: Fixed a bug that could lead to a data corruption or loss. This can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190118)
• CVE-2021-3640: Fixed a user-after-free bug in the function scosocksendmsg which could lead to local privilege escalation. (bsc#1188613)
• CVE-2021-3573: Fixed a user-after-free bug in the function hcisockbound_ioctl which could lead to local privilege escalation. (bsc#1187054).