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.

Related CVEs

CVE-2020-10766

Key Information

GHSA ID

GHSA-c87p-h49c-qjmw

Published

May 24, 2022 5:28 PM

Last Modified

May 24, 2022 5:28 PM

CVSS Score

5.0 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: September 14, 2025 6:31 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.