CVE-2020-10766

MEDIUM
5.5
CVSS Score
Published: September 15, 2020 at 10:10 PM UTC
Updated: June 17, 2026 at 02:48 AM UTC
2 products affected across 2 vendorsLinux KernelLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.5%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.8.0
Affected range stops below 5.8.0, so it looks safe — our inference, not a vendor statement
v < 5.8-rc1
Affected range stops below 5.8-rc1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

5.5MEDIUMredhat
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-440NVD-CWE-noinfo

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