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Red Hat OpenShift: CVE-2020-10766: kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection.

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Red Hat OpenShift: CVE-2020-10766: kernel: Rogue cross-process SSBD shutdown. Linux scheduler logical bug allows an attacker to turn off the SSBD protection.

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
09/15/2020
Created
12/30/2020
Added
12/29/2020
Modified
12/29/2020

Description

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.

Solution(s)

  • linuxrpm-upgrade-redhat-coreos

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