CVE-2021-47609

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

0.26% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 17.7% 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

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

2024-06-19 14:57Z2 YR AGO

Last updated

2026-05-11 13:57Z3 MO AGO

Reserved

2024-06-19

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
• CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

7b49212a4c150af483552492c409dcc2f8b070c7434e454958f5f96463d6049f

• git.kernel.orghttps://git.kernel.org/stable/c/639901b9429a3195e0fead981ed74b51f5f31538
• git.kernel.orghttps://git.kernel.org/stable/c/4694b1ec425a2d20d6f8ca3db594829fdf5f2672
• git.kernel.orghttps://git.kernel.org/stable/c/7e8645ca2c0046f7cd2f0f7d569fc036c8abaedb
• git.kernel.orghttps://git.kernel.org/stable/c/802a1a8501563714a5fe8824f4ed27fec04a0719
• git.kernel.orghttps://git.kernel.org/stable/c/f0f484714f35d24ffa0ecb4afe3df1c5b225411d
• git.kernel.orghttps://git.kernel.org/stable/c/976389cbb16cee46847e5d06250a3a0b5506781e
• git.kernel.orghttps://git.kernel.org/stable/c/865ed67ab955428b9aa771d8b4f1e4fb7fd08945