CVE-2021-47109

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.68% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 50.0% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Low. 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

2024-03-15 20:14Z2 YR AGO

Last updated

2026-08-05 08:46Z1 MO AGO

Reserved

2024-03-04

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-190Integer Overflow or WraparoundBase
• CWE-121Stack-based Buffer OverflowVariant

Data version

5.2

Document digest

86997f87f408782b7b9332a22ee98f1f94293d5675340680db0d84bd01045910

• git.kernel.orghttps://git.kernel.org/stable/c/d99029e6aab62aef0a0251588b2867e77e83b137
• git.kernel.orghttps://git.kernel.org/stable/c/d17d47da59f726dc4c87caebda3a50333d7e2fd3
• git.kernel.orghttps://git.kernel.org/stable/c/ddf088d7aaaaacfc836104f2e632b29b1d383cfc
• git.kernel.orghttps://git.kernel.org/stable/c/7a6b1ab7475fd6478eeaf5c9d1163e7a18125c8f