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[Launchpad Bug Tracker <1971480@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package linux - 4.15.0-184.194

---------------
linux (4.15.0-184.194) bionic; urgency=medium

  * CVE-2022-1966
    - netfilter: nf_tables: disallow non-stateful expression in sets earlier

 -- Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>  Thu, 02 Jun
2022 15:36:51 -0300

** Changed in: linux (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1971480

Title:
  issuing invalid ioctl to /dev/vsock may spam dmesg

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  In Progress
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Focal:
  Fix Released

Bug description:
  [Impact]
  Any user may spam dmesg may issuing an invalid ioctl to /dev/vsock.

  [Fix]
  Do not print anything to dmesg when an invalid ioctl is issued to /dev/vsock.

  [Test case]
  ioctl(open("/dev/vsock", O_RDONLY), garbage, 0);

  [Potential regression]
  vsock users may regress.

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