## Releases
* Ubuntu 18.04 LTS
* Ubuntu 16.04 ESM
* Ubuntu 14.04 ESM
## Packages
* linux \- Linux kernel
* linux-aws \- Linux kernel for Amazon Web Services (AWS) systems
* linux-aws-hwe \- Linux kernel for Amazon Web Services (AWS-HWE) systems
* linux-azure \- Linux kernel for Microsoft Azure Cloud systems
* linux-azure-4.15 \- Linux kernel for Microsoft Azure Cloud systems
* linux-gcp \- Linux kernel for Google Cloud Platform (GCP) systems
* linux-gcp-4.15 \- Linux kernel for Google Cloud Platform (GCP) systems
* linux-hwe \- Linux hardware enablement (HWE) kernel
* linux-kvm \- Linux kernel for cloud environments
* linux-oracle \- Linux kernel for Oracle Cloud systems
* linux-raspi2 \- Linux kernel for Raspberry Pi systems
* linux-snapdragon \- Linux kernel for Qualcomm Snapdragon processors
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.
(CVE-2022-21499)
Aaron Adams discovered that the netfilter subsystem in the Linux kernel did
not properly handle the removal of stateful expressions in some situations,
leading to a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-1966)
It was discovered that the SCTP protocol implementation in the Linux kernel
did not properly verify VTAGs in some situations. A remote attacker could
possibly use this to cause a denial of service (connection disassociation).
(CVE-2021-3772)
It was discovered that the btrfs file system implementation in the Linux
kernel did not properly handle locking in certain error conditions. A local
attacker could use this to cause a denial of service (kernel deadlock).
(CVE-2021-4149)
David Bouman discovered that the netfilter subsystem in the Linux kernel
did not initialize memory in some situations. A local attacker could use
this to expose sensitive information (kernel memory). (CVE-2022-1016)
It was discovered that the virtual graphics memory manager implementation
in the Linux kernel was subject to a race condition, potentially leading to
an information leak. (CVE-2022-1419)
赵子轩 discovered that the 802.2 LLC type 2 driver in the Linux kernel did not
properly perform reference counting in some error conditions. A local
attacker could use this to cause a denial of service. (CVE-2022-28356)
It was discovered that the EMS CAN/USB interface implementation in the
Linux kernel contained a double-free vulnerability when handling certain
error conditions. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2022-28390)
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(CVE-2022-1966)\n\n - Linux PV device frontends vulnerable to attacks by backends T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Several Linux PV device frontends are using the grant table interfaces for removing access rights of the backends in ways being subject to race conditions, resulting in potential data leaks, data corruption by malicious backends, and denial of service triggered by malicious backends: blkfront, netfront, scsifront and the gntalloc driver are testing whether a grant reference is still in use. If this is not the case, they assume that a following removal of the granted access will always succeed, which is not true in case the backend has mapped the granted page between those two operations. 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(CVE-2022-21499)\n\n - net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create\n user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to\n a use-after-free. (CVE-2022-32250)\n\n - The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are\n used. (CVE-2022-32296)\n\n - An issue was discovered in the Linux kernel through 5.18.3 on powerpc 32-bit platforms. There is a buffer\n overflow in ptrace PEEKUSER and POKEUSER (aka PEEKUSR and POKEUSR) when accessing floating point\n registers. (CVE-2022-32981)\n\n - kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak\n (CVE-2022-1012)\n\n - A kernel information leak flaw was identified in the scsi_ioctl function in drivers/scsi/scsi_ioctl.c in\n the Linux kernel. 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Linux kernel vulnerabilities
