CVE-2021-47351

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

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 15.8% 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

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

2024-05-21 14:35Z2 YR AGO

Last updated

2026-08-05 08:47Z2 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

• CWE-617Reachable AssertionBase
• CWE-787Out-of-bounds WriteBase
• CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')Class

Data version

5.2

Document digest

d6826e742d8afb85c71ea66cc5c153ad62fc40cd1d2670f6020bdb4de4079b52

• git.kernel.orghttps://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08
• git.kernel.orghttps://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6
• git.kernel.orghttps://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82
• git.kernel.orghttps://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386
• git.kernel.orghttps://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5