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CVE-2021-3923

Public on 2023-03-27
Modified on 2024-01-14
Description

A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it can be further used to defeat existing kernel protection mechanisms.

Severity
Low
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CVSS v3 Base Score
3.3
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 kernel 2023-02-17 00:02 ALAS-2023-1688
Amazon Linux 2 - Core kernel 2022-02-04 23:25 ALAS2-2022-1749
Amazon Linux 2 - Kernel-5.10 Extra kernel 2022-01-26 00:57 ALAS2KERNEL-5.10-2022-009
Amazon Linux 2 - Kernel-5.15 Extra kernel 2023-06-29 23:20 ALAS2KERNEL-5.15-2023-023
Amazon Linux 2 - Kernel-5.4 Extra kernel 2022-01-26 00:54 ALAS2KERNEL-5.4-2022-021

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD CVSSv3 2.3 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N