VulnerabilityModified
CVE-2021-3923
An attacker with a privileged local account can leak kernel stack information when issuing commands to the /dev/infiniband/rdma_cm device node.
LOW 2.3EPSS 0.20%
Does this matter?
Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 2.3 LOWCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.20% probability · 10th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- linux/linux kernel · redhat/enterprise linux · fedoraproject/fedora
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2019643Issue Tracking, Patch, Third Party Advisory
- https://lore.kernel.org/all/20220204100036.GA12348%40kili/
- https://bugzilla.redhat.com/show_bug.cgi?id=2019643Issue Tracking, Patch, Third Party Advisory
- https://lore.kernel.org/all/20220204100036.GA12348%40kili/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.