Several security issues were fixed in the Linux kernel.
It was discovered that the BPF verifier in the Linux kernel did not properly restrict pointer types in certain situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-23222) ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.
Nick Gregory discovered that the Linux kernel incorrectly handled network
offload functionality. A local attacker could use this to cause a denial of
service or possibly execute arbitrary code. (CVE-2022-25636)
Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano
Giuffrida discovered that hardware mitigations added by ARM to their
processors to address Spectre-BTI were insufficient. A local attacker could
potentially use this to expose sensitive information. (CVE-2022-23960)
It was discovered that the BPF verifier in the Linux kernel did not
properly restrict pointer types in certain situations. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2022-23222)
Max Kellermann discovered that the Linux kernel incorrectly handled Unix
pipes. A local attacker could potentially use this to modify any file that
could be opened for reading. (CVE-2022-0847)
Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the
Linux kernel did not properly restrict access to the cgroups v1
release_agent feature. A local attacker could use this to gain
administrative privileges. (CVE-2022-0492)
William Liu and Jamie Hill-Daniel discovered that the file system context
functionality in the Linux kernel contained an integer underflow
vulnerability, leading to an out-of-bounds write. A local attacker could
use this to cause a denial of service (system crash) or execute arbitrary
code. (CVE-2022-0185)
Enrico Barberis, Pietro Frigo, Marius Muench, Herbert Bos, and Cristiano
Giuffrida discovered that hardware mitigations added by Intel to their
processors to address Spectre-BTI were insufficient. A local attacker could
potentially use this to expose sensitive information. (CVE-2022-0001)
Jann Horn discovered a race condition in the Unix domain socket
implementation in the Linux kernel that could result in a read-after-free.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2021-4083)
It was discovered that the NFS server implementation in the Linux kernel
contained an out-of-bounds write vulnerability. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2021-4090)
Kirill Tkhai discovered that the XFS file system implementation in the
Linux kernel did not calculate size correctly when pre-allocating space in
some situations. A local attacker could use this to expose sensitive
information. (CVE-2021-4155)
It was discovered that the AMD Radeon GPU driver in the Linux kernel did
not properly validate writes in the debugfs file system. A privileged
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2021-42327)
Sushma Venkatesh Reddy discovered that the Intel i915 graphics driver in
the Linux kernel did not perform a GPU TLB flush in some situations. A
local attacker could use this to cause a denial of service or possibly
execute arbitrary code. (CVE-2022-0330)
Samuel Page discovered that the Transparent Inter-Process Communication
(TIPC) protocol implementation in the Linux kernel contained a stack-based
buffer overflow. A remote attacker could use this to cause a denial of
service (system crash) for systems that have a TIPC bearer configured.
(CVE-2022-0435)
It was discovered that the KVM implementation for s390 systems in the Linux
kernel did not properly prevent memory operations on PVM guests that were
in non-protected mode. A local attacker could use this to obtain
unauthorized memory write access. (CVE-2022-0516)
It was discovered that the ICMPv6 implementation in the Linux kernel did
not properly deallocate memory in certain situations. A remote attacker
could possibly use this to cause a denial of service (memory exhaustion).
(CVE-2022-0742)
It was discovered that the VMware Virtual GPU driver in the Linux kernel
did not properly handle certain failure conditions, leading to a stale
entry in the file descriptor table. A local attacker could use this to
expose sensitive information or possibly gain administrative privileges.
(CVE-2022-22942)
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