Lisa Aichele

**Name of the Vulnerable Software and Affected Versions** AMD processor microcode (affected versions not specified) **Description** The issue is related to the implementation of the Indirect Branch Prediction Barrier (IBPB) mechanism in AMD processor microcode, which may lead to a potential information disclosure due to incorrect clearing of the Return Address Stack (RAS). This could allow an attacker to obtain sensitive information using a side channel. The vulnerability is being actively exploited. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** AMD CPUs (affected versions not specified) **Description** The issue is related to the LFENCE/JMP module in AMD CPUs, specifically concerning the branch prediction mechanism. This allows an attacker to access protected memory from a program without the necessary privileges by exploiting indirect branch prediction. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.