[QSA-0118211]
Linux kernel vulnerabilities

Qlustar Security Advisory 0118211

January 18th, 2021

Summary:

The system could crash or be made to run programs as an administrator.

    Package(s)       : linux-image-ql-generic,
                       qlustar-module-core-bionic-amd64-11.0.1,
                       qlustar-module-core-centos7-amd64-11.0.1,
                       qlustar-module-core-centos8-amd64-11.0.1,
                       qlustar-module-core-focal-amd64-12.0.0,
                       qlustar-module-core-centos7-amd64-12.0.0,
                       qlustar-module-core-centos8-amd64-12.0.0
    Qlustar releases : 11.0, 12.0
    Affected versions: All versions prior to this update
    Vulnerability    : privilege escalation/denial of service
    Problem type     : local
    Qlustar-specific : no
    CVE Id(s)        : Not documented
  

A number of vulnerabilities and bugs have been discovered in the 5.4.x Linux kernel series since the last Qlustar 12.0 release based on 5.4.86. They may lead to a denial of service or privilege escalation. Please check the following web pages that contain details of the fixes in each release after 5.4.86 up to the current Qlustar kernel 5.4.89:

    Linux kernel 5.4.89
    Linux kernel 5.4.88
    Linux kernel 5.4.87
   

A number of vulnerabilities and bugs have been discovered in the 4.19.x Linux kernel series since the last Qlustar 11.0 release based on 4.19.160. They may lead to a denial of service or privilege escalation. Please check the following web pages that contain details of the fixes in each release after 4.19.160 up to the current Qlustar kernel 4.19.167:

    Linux kernel 4.19.167
    Linux kernel 4.19.166
    Linux kernel 4.19.165
    Linux kernel 4.19.164
    Linux kernel 4.19.163
    Linux kernel 4.19.162
    Linux kernel 4.19.161
   

Update instructions:

The problem can be corrected by updating your system to the following or more recent package versions (follow the Qlustar Update Instructions and on Qlustar 11 also perform the manual steps '7. Migration to GRUB PXE booting' and '11. Adjust root bash shell initialization' as described in the Release Notes if you haven't done so yet):

For Qlustar 12.0

    linux-image-ql-generic                     5.4.89-ql-generic-12.0-6
    qlustar-module-core-focal-amd64-12.0.0     12.0.0.1-b528f1339
    qlustar-module-core-centos7-amd64-12.0.0   12.0.0.1-b528f1339
    qlustar-module-core-centos8-amd64-12.0.0   12.0.0.1-b528f1339
  

For Qlustar 11.0

    linux-image-ql-generic                     4.19.167-ql-generic-11.0-21
    qlustar-module-core-bionic-amd64-11.0.1    11.0.1.5-b527f1338
    qlustar-module-core-centos7-amd64-11.0.1   11.0.1.5-b527f1340
    qlustar-module-core-centos8-amd64-11.0.1   11.0.1.5-b527f1340