CVE-2021-31916

Medium

An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.

Package Linux Kernel
Published 2021-05-06
Last modified 2024-11-21
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

6.7

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-787

CVE-2021-31916 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

5 total

Frequently asked questions

  • What is CVE-2021-31916?

    CVE-2021-31916 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.7 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . CVE-2021-31916 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2021-31916?

    CVE-2021-31916 has a CVSS score of 6.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2021-31916?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2021-31916 patch availability.

  • Is CVE-2021-31916 actively exploited?

    No. CVE-2021-31916 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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