Help Center/ Huawei Cloud EulerOS/ User Guide/ Security Updates for HCE/ Installing Security Updates
Updated on 2025-07-21 GMT+08:00
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Installing Security Updates

  • Run the yum upgrade --security command to install all security updates. 
    [root@localhost ~]# yum upgrade --security
Last metadata expiration check: 0:16:41 ago on Wed 26 Mar 2025 11:08:19 AM CST.
Dependencies resolved.
=================================================================
Package		Arch		Version			      Repository	Size
=================================================================
Installing:
Kernel		x86_64		5.10.0-60.18.0.50.h498_2.hce2	hceversion		49 M
Upgrading:
Curl	        x86_64		7.79.1-2.h6.hce2	        hceversion		147 k
...
Transaction Summary
=================================================================
Install   1 Package
Upgrade  22 Packages
Total download size: 69 M
Is this ok [y/N]:
  • Run the yum upgrade --sec-severity={Critical,Important,Moderate,Low} command to install security updates of the specified level.

    Values in the brackets can be any combination of security update levels.

    [root@localhost ~]# yum upgrade --sec-severity=Moderate
Last metadata expiration check: 0:32:27 ago on Thu 08 Sep 2022 05:30:23 PM CST.
Dependencies resolved.
=================================================================
Package	                Architecture	        Version			 Repository	    Size
=================================================================
Upgrading:
gnupg2		        x86_64		        2.2.32-1.h6.hce2	  hceversion		    2.2 M
python3-unbound         x86_64                  1.13.2-3.h2.hce2          hceversion              96 k
unbound-libs            x86_64	                1.13.2-3.h2.hce2	  hceversion		    505 k
Transaction Summary
=================================================================Upgrade		3 Packages
Total download size: 2.8 M
Is this ok [y/N]:
  • Run yum upgrade --advisory =<SA ID> to install security updates of a specific advisory.

    Multiple packages are separated by commas (,).

    root@localhost ~]# yum upgrade --advisory=HCE2-SA-2022-0033
Last metadata expiration check: 1:48:44 ago on Tue 13 Sep 2022 09:43:13 AM CST.
Dependencies resolved.
=================================================================
Package              Architecture            Version	            Repository	       Size
=================================================================
Upgrading:
python3-rpm	        x86_64		4.17.0-8.h13.hce2		hceversion		87 k
rpm			x86_64		4.17.0-8.h13.hce2		hceversion		498 k
rpm-libs		x86_64		4.17.0-8.h13.hce2		hceversion		376 k
Transaction Summary
=================================================================
Upgrade  3 Packages
Total download size: 962 k
Is this ok [y/N]:
  • Run the yum upgrade --cve=<CVE ID> command to install security updates of a specific CVE.

    Multiple packages are separated by commas (,).

    [root@localhost ~]# yum upgrade --cve=CVE-2021-28861
Last metadata expiration check: 5:16:36 ago on Tue 13 Sep 2022 09:43:13 AM CST.
Dependencies resolved.
=================================================================
Package			      Architecture	Version			Repository	Size
=================================================================
Upgrading:
python3				x86_64	       3.9.9-7.h10.hce2	        hceversion	        8.0 M
python3-unversioned-command	x86_64	       3.9.9-7.h10.hce2	        hceversion	        3.9 k
Transaction Summary
=================================================================
Upgrade  2 Packages
Total download size: 8.0 M
Is this ok [y/N]:
Parent topic: Security Updates for HCE