CLSA-2023-1698306895

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CLSA-2023-1698306895

Summary: Fix of 7 CVEs

Details: * CVE-2023-0597 // CVE-url: https://ubuntu.com/security/CVE-2023-0597 - x86/kasan: Map shadow for percpu pages on demand - x86/mm: Recompute physical address for every page of per-CPU CEA mapping - x86/mm: Populate KASAN shadow for entire per-CPU range of CPU entry area - x86/mm: Do not shuffle CPU entry areas without KASLR * CVE-url: https://ubuntu.com/security/CVE-2023-0597 - random32: add noise from network and scheduling activity - x86/mm: Randomize per-cpu entry area - x86/cpu_entry_area: Move percpu_setup_debug_store() to __init section - x86/cpu_entry_area: Cleanup setup functions * CVE-2023-42752 // CVE-url: https://ubuntu.com/security/CVE-2023-42752 - igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU * CVE-2023-4623 // CVE-url: https://ubuntu.com/security/CVE-2023-4623 - net/sched: sch_hfsc: Ensure inner classes have fsc curve * CVE-2023-34319 // CVE-url: https://ubuntu.com/security/CVE-2023-34319 - xen/netback: Fix buffer overrun triggered by unusual packet * CVE-2023-4881 // CVE-url: https://ubuntu.com/security/CVE-2023-4881 - netfilter: nftables: exthdr: fix 4-byte stack OOB write * CVE-2023-31083 // CVE-url: https://ubuntu.com/security/CVE-2023-31083 - Bluetooth: hci_ldisc: check HCI_UART_PROTO_READY flag in HCIUARTGETPROTO * CVE-2023-3772 // CVE-url: https://ubuntu.com/security/CVE-2023-3772 - xfrm: add NULL check in xfrm_update_ae_params

References: https://errata.cloudlinux.com/ubuntu18_04-els/CLSA-2023-1698306895