A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB (Indirect Branch Prediction Barrier). The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation (IBRS) is available. This flaw allows a local attacker to perform a Spectre V2 style attack when this configuration is active. The highest threat from this vulnerability is to confidentiality.

Related CVEs

CVE-2020-10767

Key Information

GHSA ID

GHSA-hmrm-3xmg-v873

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 15, 2025 6:32 AM

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