IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure.
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1040
http://www.openwall.com/lists/oss-security/2022/11/10/2
Source: MITRE
Published: 2022-11-09
Updated: 2023-03-27
Type: NVD-CWE-noinfo
Base Score: 5.5
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM