CVE-2021-3492

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.53% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 74.3% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-04-17 04:20Z5 YR AGO

Last updated

2024-09-17 03:54Z2 YR AGO

Reserved

2021-04-09

Assigning CNA

canonical

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-401Missing Release of Memory after Effective LifetimeVariant
• CWE-415Double FreeVariant
• CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

3d4f70fa0894f69164006461d0f27479d43271ca09ac778c923b9ba3c2388b13

• www.openwall.comhttps://www.openwall.com/lists/oss-security/2021/04/16/2x_refsource_MISC
• git.launchpad.nethttps://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=8fee52ab9da87d82bc6de9ebb3480fff9b4d53e6x_refsource_MISC
• git.launchpad.nethttps://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=25c891a949bf918b59cbc6e4932015ba4c35c333x_refsource_MISC
• ubuntu.comhttps://ubuntu.com/security/notices/USN-4917-1x_refsource_MISC
• www.zerodayinitiative.comhttps://www.zerodayinitiative.com/advisories/ZDI-21-422/x_refsource_MISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/162614/Kernel-Live-Patch-Security-Notice-LSN-0077-1.htmlx_refsource_MISC