[QSA-0821201]
Linux kernel vulnerabilities

Qlustar Security Advisory 0821201

August 21st, 2020

Summary:

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

    Package(s)       : linux-image-ql-generic,
                       qlustar-module-core-xenial-amd64-10.1.1,
                       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 releases : 10.1, 11.0
    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 4.19.x Linux kernel series since the last Qlustar 11.0 release based on 4.19.132. 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 4.19.132 up to the current Qlustar kernel 4.19.140:

    Linux kernel 4.19.140
    Linux kernel 4.19.139
    Linux kernel 4.19.138
    Linux kernel 4.19.137
    Linux kernel 4.19.136
    Linux kernel 4.19.135
    Linux kernel 4.19.134
    Linux kernel 4.19.133
   

A number of vulnerabilities and bugs have been discovered in the 4.14.x Linux kernel series since the last Qlustar 10.1 release based on 4.14.188. 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 4.14.188 up to the current Qlustar kernel 4.14.193:

    Linux kernel 4.14.193
    Linux kernel 4.14.192
    Linux kernel 4.14.191
    Linux kernel 4.14.190
    Linux kernel 4.14.189
  

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 11.0

    linux-image-ql-generic                     4.19.140-ql-generic-11.0-18
    qlustar-module-core-bionic-amd64-11.0.1    11.0.1.2-b522f1305
    qlustar-module-core-centos7-amd64-11.0.1   11.0.1.2-b522f1305
  

For Qlustar 10.1

    linux-image-ql-generic                     4.14.193-ql-generic-10.1-29
    qlustar-module-core-xenial-amd64-10.1.1    10.1.1.15-b521f1304