CVE-2021-3923

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.

Category

2.3
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.01%
Third-Party Advisory redhat.com
Affected: n/a kernel
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2019643 issue tracking third party advisory patch
https://lore.kernel.org/all/20220204100036.GA12348%40kili/

Frequently Asked Questions

What is the severity of CVE-2021-3923?
CVE-2021-3923 has been scored as a low severity vulnerability.
How to fix CVE-2021-3923?
To fix CVE-2021-3923, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3923 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3923 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-3923?
CVE-2021-3923 affects n/a kernel.
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