Add initial draft for linux DSA for 5.10.92-1 update

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+Source: linux
+CVE ID: CVE-2021-4155 CVE-2021-28711 CVE-2021-28712 CVE-2021-28713 CVE-2021-28714 CVE-2021-28715 CVE-2021-39685 CVE-2021-45095 CVE-2021-45469 CVE-2021-45480 CVE-2022-0185 CVE-2022-23222
+Debian Bug: 988044 996974
+
+Several vulnerabilities have been discovered in the Linux kernel
+that may lead to a privilege escalation, denial of service or
+information leaks.
+
+CVE-2021-4155
+
+        Kirill Tkhai discovered a data leak flaw in the way the
+        XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for a size
+        increase of files with unaligned size. A local attacker can take
+        advantage of this flaw to leak data on the XFS filesystem.
+
+CVE-2021-28711, CVE-2021-28712, CVE-2021-28713 (XSA-391)
+
+        Juergen Gross reported that malicious PV backends can cause a
+        denial of service to guests being serviced by those backends via
+        high frequency events, even if those backends are running in a
+        less privileged environment.
+        
+CVE-2021-28714, CVE-2021-28715 (XSA-392)
+
+        Juergen Gross discovered that Xen Guests can force the Linux
+        netback driver to hog large amounts of kernel memory, resulting
+        in denial of service.
+
+CVE-2021-39685
+
+        Szymon Heidrich discovered a buffer overflow vulnerability in
+        the USB Gadget subsystem, resulting in information disclosure,
+        denial of service or privilege escalation.
+
+CVE-2021-45095
+
+        It was discovered that the Phone Network protocol (PhoNet)
+        driver has a reference count leak in the pep_sock_accept()
+        function.
+
+CVE-2021-45469
+
+         Wenqing Liu reported an out-of-bounds memory access
+         vulnerability in the f2fs implementation when an inode has an
+         invalid last xattr entry. An attacker able to mount a
+         specially crafted image can take advantage of this flaw for
+         denial of service.
+
+CVE-2021-45480
+
+        A memory leak flaw was discovered in the __rds_conn_create()
+        function in the RDS (Reliable Datagram Sockets) protocol
+        subsystem.
+
+CVE-2022-0185
+
+        William Liu, Jamie Hill-Daniel, Isaac Badipe, Alec Petridis,
+        Hrvoje Misetic and Philip Papurt discovered a heap-based buffer
+        overflow flaw in the legacy_parse_param function in the
+        Filesystem Context functionality, allowing an local user (with
+        CAP_SYS_ADMIN capability in the current namespace) to escalate
+        privileges.
+        
+CVE-2022-23222
+
+        'tr3e' discovered that the BPF verifier does not properly
+        restrict several *_OR_NULL pointer types allowing these types to
+        do pointer arithmetic. A local user with the ability to call
+        bpf(), can take advantage of this flaw to excalate privileges.
+        Unprivileged calls to bpf() are disabled by default in Debian,
+        mitigating this flaw.
+
+For the stable distribution (bullseye), these problems have been fixed in
+version 5.10.92-1. This version includes changes which were aimed to
+land in the next Debian bullseye point release.