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Test your applicationsUpgrade RHEL:8
kernel-rt-debug-modules
to version 0:4.18.0-193.13.2.rt13.65.el8_2 or higher.
This issue was patched in RHSA-2020:3016
.
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-modules
package and not the kernel-rt-debug-modules
package as distributed by RHEL
.
See How to fix?
for RHEL:8
relevant fixed versions and status.
A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest threat from this vulnerability is to confidentiality.