CVE-2021-3923

LOW

Linux Kernel < 5.15.14 - Kernel Stack Information Leak via RDMA over Infiniband

Title source: llm

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.

References (2)

Core 2

Core References

Mailing List

https://lore.kernel.org/all/20220204100036.GA12348%40kili/

Issue Tracking, Patch, Third Party Advisory

https://bugzilla.redhat.com/show_bug.cgi?id=2019643

Scores

CVSS v3 2.3

EPSS 0.0002

EPSS Percentile 3.9%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-200

Status published

Products (5)

fedoraproject/fedora 37

linux/linux_kernel < 5.15.14

redhat/enterprise_linux 6.0

redhat/enterprise_linux 7.0

redhat/enterprise_linux 8.0

Published Mar 27, 2023

Tracked Since Feb 18, 2026