Vulnerability 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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.15.14 |
| Redhat | Enterprise Linux | 6.0 |
| Fedoraproject | Fedora | 37 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2019643Issue TrackingPatchThird Party Advisory
- https://lore.kernel.org/all/20220204100036.GA12348%40kili/
- https://bugzilla.redhat.com/show_bug.cgi?id=2019643Issue TrackingPatchThird Party Advisory
- https://lore.kernel.org/all/20220204100036.GA12348%40kili/
FAQ
What is CVE-2021-3923?
CVE-2021-3923 is a vulnerability with a CVSS score of 2.3 (LOW). 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/infiniban...
How severe is CVE-2021-3923?
CVE-2021-3923 has been rated LOW with a CVSS base score of 2.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3923?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Enterprise Linux, Fedoraproject Fedora.