Security update for containerd, docker, runc (important)

An update that solves four vulnerabilities and has 13 fixes
is now available.

Description:

This update for containerd, docker, runc fixes the following issues:

Docker was updated to 20.10.6-ce (bsc#1184768, bsc#1182947, bsc#1181594)

• Switch version to use -ce suffix rather than _ce to avoid confusing
  other tools (bsc#1182476).
• CVE-2021-21284: Fixed a potential privilege escalation when the root
  user in the remapped namespace has access to the host filesystem
  (bsc#1181732)
• CVE-2021-21285: Fixed an issue where pulling a malformed Docker image
  manifest crashes the dockerd daemon (bsc#1181730).
• btrfs quotas being removed by Docker regularly (bsc#1183855, bsc#1175081)

runc was updated to v1.0.0~rc93 (bsc#1182451, bsc#1175821 bsc#1184962).

• Use the upstream runc package (bsc#1181641, bsc#1181677, bsc#1175821).
• Fixed /dev/null is not available (bsc#1168481).
• CVE-2021-30465: Fixed a symlink-exchange attack vulnarability
  (bsc#1185405).

containerd was updated to v1.4.4

• CVE-2021-21334: Fixed a potential information leak through environment
  variables (bsc#1183397).
• Handle a requirement from docker (bsc#1181594).

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods
like YaST online_update or “zypper patch”.

Alternatively you can run the command listed for your product:

• openSUSE Leap 15.3:

  zypper in -t patch openSUSE-SLE-15.3-2021-1954=1