Debian: DSA-5593-1 critical: kernel privilege escalation and DOS

CVE-2023-6531

Jann Horn discovered a use-after-free flaw due to a race condition
problem when the unix garbage collector's deletion of a SKB races
with unix_stream_read_generic() on the socket that the SKB is
queued on.

CVE-2023-6622

Xingyuan Mo discovered a flaw in the netfilter subsystem which may
result in denial of service or privilege escalation for a user with
the CAP_NET_ADMIN capability in any user or network namespace.

CVE-2023-6817

Xingyuan Mo discovered that a use-after-free in Netfilter's
implementation of PIPAPO (PIle PAcket POlicies) may result in denial
of service or potential local privilege escalation for a user with
the CAP_NET_ADMIN capability in any user or network namespace.

CVE-2023-6931

Budimir Markovic reported a heap out-of-bounds write vulnerability
in the Linux kernel's Performance Events system which may result in
denial of service or privilege escalation.

CVE-2023-51779

It was discovered that a race condition in t...