CLSA-2024-1720468480 kernel: Fix of 89 CVEs

kvm: initialize all of the kvmdebugregs structure before sending it to userspace CVE-2023-1513 - wifi: mac80211: fix MBSSID parsing use-after-free CVE-2022-42719 - mac80211: always allocate struct ieee80211elems CVE-2022-42719 - netfilter: nftables: initialize registers in nftdochain...

UVI-2021-1000741 pid: take a reference when initializing `cad_pid`

pid: take a reference when initializing cadpid This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.194 by commit...

A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.

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