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nvd[email protected]NVD:CVE-2021-3923
HistoryMar 27, 2023 - 9:15 p.m.

CVE-2021-3923

2023-03-2721:15:09
CWE-200
web.nvd.nist.gov
2
linux
rdma
infiniband
kernel
privileged account
information leak
device node
security vulnerability

2.3 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

5.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%

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.

Affected configurations

NVD
Node
linuxlinux_kernelRange<5.15.14
OR
redhatenterprise_linuxMatch6.0
OR
redhatenterprise_linuxMatch7.0
OR
redhatenterprise_linuxMatch8.0
Node
fedoraprojectfedoraMatch37

2.3 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

5.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%