Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security bugfixes. The following security bugs were fixed: - CVE-2020-26555: Fixed an issue during BR/EDR PIN code pairing in the Bluetooth subsystem that would allow replay attacks (bsc#1179610 bsc#1215237). - CVE-2023-6121: Fixed an information leak via dmesg when receiving a crafted packet in the NVMe-oF/TCP subsystem (bsc#1217250). - CVE-2023-6606: Fixed an out of bounds read in the SMB client when receiving a malformed length from a server (bsc#1217947). - CVE-2023-6610: Fixed an out of bounds read in the SMB client when printing debug information (bsc#1217946). - CVE-2023-6931: Fixed an out of bounds write in the Performance Events subsystem when adding a new event (bsc#1218258). - CVE-2023-6932: Fixed a use-after-free issue when receiving an IGMP query packet due to reference count mismanagement (bsc#1218253). - CVE-2023-51779: Fixed a use-after-free because of a bt_sock_ioctl race condition in bt_sock_recvmsg (bsc#1218559). The following non-security bugs were fixed: - Reviewed and added more information to README.SUSE (jsc#PED-5021). - Enabled multibuild for kernel packages (JSC-SLE#5501, boo#1211226, bsc#1218184). - clocksource: Avoid accidental unstable marking of clocksources (bsc#1218105). - clocksource: Suspend the watchdog temporarily when high read latency detected (bsc#1218105). - efi/mokvar: Reserve the table only if it is in boot services data (bsc#1215375).