CVE-2022-21151: 
Linux Debian vulnerability analysis and mitigation

CVE-2022-21151 is a processor vulnerability discovered in Intel processors that was disclosed on May 12, 2022. The vulnerability allows an authenticated user to potentially enable information disclosure through local access due to processor optimization removal or modification of security-critical code. The vulnerability affects multiple Intel processor families and was discovered by researchers Alysa Milburn, Jason Brandt, Avishai Redelman and Nir Lavi (Ubuntu Security).

The vulnerability has been assigned a CVSS v3.1 base score of 5.5 (Medium) with the following vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. This indicates that the vulnerability requires local access, low attack complexity, low privileges, and no user interaction. The vulnerability can lead to high confidentiality impact but has no impact on integrity or availability (NVD).

Successful exploitation of this vulnerability could lead to the disclosure of sensitive information through local access. The vulnerability affects the confidentiality of the system but does not impact system integrity or availability (NetApp Security).

Intel has released firmware updates to mitigate this vulnerability. Various vendors have also released patches, including Debian (version 3.20220510.1~deb10u1 for oldstable and 3.20220510.1~deb11u1 for stable) and Ubuntu (version 3.20220510.0ubuntu1 for various releases). Users are recommended to apply the latest firmware updates and patches available for their systems (Debian Security, Intel Advisory).