01 Record

CVE-2021-47587

net: systemport: Add global locking for descriptor lifecycle

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

net: systemport: Add global locking for descriptor lifecycle

03 Exploitation and scoring

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

0.55% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 43.7% 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.

04 Metadata

Published

2024-06-19 14:53Z2 YR AGO

Last updated

2026-08-05 08:48Z1 MO AGO

Reserved

2024-05-24

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-667Improper LockingClass

Data version

5.2

Document digest

52563e981db6df569fbd5a713233b592657f723d8374794dfcd372f742d52f67

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux80105befdb4b8cea924711b40b2462b87df65b62 to < 8ed2f5d08d6e59f8c78b2869bfb95d0be32c094c, 80105befdb4b8cea924711b40b2462b87df65b62 to < de57f62f76450b934de8203711bdc4f7953c3421, 80105befdb4b8cea924711b40b2462b87df65b62 to < f3fde37d3f0d429f0fcce214cb52588a9e21260e, 80105befdb4b8cea924711b40b2462b87df65b62 to < 595a684fa6f23b21958379a18cfa83862c73c2e1, 80105befdb4b8cea924711b40b2462b87df65b62 to < c675256a7f131f5ba3f331efb715e8f31ea0e392, 80105befdb4b8cea924711b40b2462b87df65b62 to < 6e1011cd183faae8daff275c72444edcdfe0d473, 80105befdb4b8cea924711b40b2462b87df65b62 to < eb4687c7442942e115420a30185f8d83faf37696, 80105befdb4b8cea924711b40b2462b87df65b62 to < 8b8e6e782456f1ce02a7ae914bbd5b1053f0b034, 3.16—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/8ed2f5d08d6e59f8c78b2869bfb95d0be32c094c
git.kernel.orghttps://git.kernel.org/stable/c/de57f62f76450b934de8203711bdc4f7953c3421
git.kernel.orghttps://git.kernel.org/stable/c/f3fde37d3f0d429f0fcce214cb52588a9e21260e
git.kernel.orghttps://git.kernel.org/stable/c/595a684fa6f23b21958379a18cfa83862c73c2e1
git.kernel.orghttps://git.kernel.org/stable/c/c675256a7f131f5ba3f331efb715e8f31ea0e392
git.kernel.orghttps://git.kernel.org/stable/c/6e1011cd183faae8daff275c72444edcdfe0d473
git.kernel.orghttps://git.kernel.org/stable/c/eb4687c7442942e115420a30185f8d83faf37696
git.kernel.orghttps://git.kernel.org/stable/c/8b8e6e782456f1ce02a7ae914bbd5b1053f0b034

01 Record index

CVE-2021-47587

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-47587

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References