What is CVE-2021-47001?

CVE-2021-47001 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10. CVE-2021-47001 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47001?

CVE-2021-47001 has a CVSS score of 4.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-47001?

No patch is currently available for CVE-2021-47001. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47001 actively exploited?

CVE-2021-47001 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47001

Medium

In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Fix cwnd update ordering After a reconnect, the reply handler is opening the cwnd (and thus enabling more RPC Calls to be sent) /before/ rpcrdma_post_recvs() can post enough Receive WRs to receive their replies. This causes an RNR and the new connection is lost immediately. The race is most clearly exposed when KASAN and disconnect injection are enabled. This slows down rpcrdma_rep_create() enough to allow the send side to post a bunch of RPC Calls before the Receive completion handler can invoke ib_post_recv().

Package Linux Kernel

Published 2024-02-28

Last modified 2025-04-11

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

4.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

References

The following references provide additional information about CVE-2021-47001 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Security
https://security.netapp.com/advisory/ntap-20250411-0001/
Kernel patch commit
https://git.kernel.org/stable/c/19b5fa9489b5706bc878c3a522a7f771079e2fa0
Patch
Kernel patch commit
https://git.kernel.org/stable/c/35d8b10a25884050bb3b0149b62c3818ec59f77c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8834ecb5df22b7ff3c9b0deba7726579bb613f95
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2021-47001

Severity Medium

CVSS score 4.7 / 10

CVSS version 3.1

Published 2024-02-28

Modified 2025-04-11

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47001?

CVE-2021-47001 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 . CVE-2021-47001 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47001?

CVE-2021-47001 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-47001?

No patch is currently available for CVE-2021-47001. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47001 actively exploited?

No — CVE-2021-47001 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.