Information Exposure Affecting bpftool package, versions <0:4.18.0-372.9.1.el8
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Test your applications- Snyk ID SNYK-CENTOS8-BPFTOOL-3372768
- published 25 Mar 2023
- disclosed 1 Dec 2021
Introduced: 1 Dec 2021
CVE-2021-3923 Open this link in a new tabHow to fix?
Upgrade Centos:8 bpftool to version 0:4.18.0-372.9.1.el8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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.