CVE-2021-3923

LOW EPSS 9.8%
Published Mar 27, 20233y ago · Modified Jun 17, 20262w ago
2.3 CVSS 3.1
Low
Find Similar
Published Mar 27, 2023 3y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
2.3
Exploitability
0.8
Impact
1.4
Vector string
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
9.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel* <5.15.14
redhatenterprise_linux6.0any
redhatenterprise_linux7.0any
redhatenterprise_linux8.0any
fedoraprojectfedora37any

References 2

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2019643
    Issue TrackingPatchThird Party Advisory
  • lore.kernel.org https://lore.kernel.org/all/20220204100036.GA12348%40kili/

Remediation

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2019643
    Issue TrackingPatchThird Party Advisory