CVE-2020-10766

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory kernel.org
Affected: Linux Kernel kernel
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10766 issue tracking third party advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dbbe2ad02e9df26e372f38cc3e70dab9222c832e patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-10766?
CVE-2020-10766 has been scored as a medium severity vulnerability.
How to fix CVE-2020-10766?
To fix CVE-2020-10766, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-10766 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-10766 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-10766?
CVE-2020-10766 affects Linux Kernel kernel.
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