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Test your applicationsUpgrade RHEL:8
kernel-debug
to version 0:4.18.0-372.93.1.el8_6 or higher.
This issue was patched in RHSA-2024:0930
.
Note: Versions mentioned in the description apply only to the upstream kernel-debug
package and not the kernel-debug
package as distributed by RHEL
.
See How to fix?
for RHEL:8
relevant fixed versions and status.
Certain Arm Cortex and Neoverse processors through 2022-03-08 do not properly restrict cache speculation, aka Spectre-BHB. An attacker can leverage the shared branch history in the Branch History Buffer (BHB) to influence mispredicted branches. Then, cache allocation can allow the attacker to obtain sensitive information.