[QSA-0726231] Linux kernel vulnerabilities
Qlustar Security Advisory 0726231
Juky 26th, 2023
The system could crash or be made to run programs as an administrator.
Package(s) : linux-image-ql-generic, qlustar-module-core-focal-amd64-12.0.2, qlustar-module-core-centos7-amd64-12.0.2, qlustar-module-core-jammy-amd64-13.0, qlustar-module-core-centos8-amd64-13.0 Qlustar releases : 12.0, 13 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 5.15.x Linux kernel series since the last Qlustar 13.0 release based on 5.15.119. 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 5.15.119 up to the current Qlustar kernel 5.15.122:
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 5.4.249. 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 5.4.249 up to the current Qlustar kernel 5.4.250:
The problem can be corrected by updating your system to the following or more recent package versions:
For Qlustar 13
linux-image-ql-generic 5.15.122-ql-generic-13.0-8 qlustar-module-core-jammy-amd64-13.0 13.0.6-b565f1499 qlustar-module-core-centos8-amd64-13.0 13.0.6-b565f1499
For Qlustar 12.0
linux-image-ql-generic 5.4.250-ql-generic-12.0-28 qlustar-module-core-focal-amd64-12.0.2 220.127.116.11-b566f1500
Special Update instructions:
In addition to the steps described in the general Qlustar Update Instructions these updates require the following:
- On Qlustar 12, also perform the following manual steps if you haven’t done so yet: Write the
dnsmasq and slurm config with QluMan before rebooting. If your cluster was installed with a
release earlier than 18.104.22.168-b546f1425 you will have to generate new LDAP certificates at
some point since the earlier ones were generated with a 1 year validity. Now they are
generated with an unlimited validity. To check the expiration date execute
# openssl x509 -dates -in /etc/ssl/certs/qlustar-ca-cert.pem | grep notAfter
To regenerate the certificate with unlimited validity execute
# qluman-ldap-cli --update-certs
before rebooting the whole cluster.
Please note that we no longer provide 12.x AlmaLinux 8 modules for Qlustar 12. If you want to use AlmaLinux 8 under Qlustar 12, please switch to the 13.x image modules and create a corresponding chroot for it.