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().
Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-7173-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7173-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7173-3 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-7195-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-7195-2 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-7413-1 Linux kernel (IoT) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 11 Apr 2025 22:45:00 +0000

Type Values Removed Values Added
References

Wed, 08 Jan 2025 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'}


Mon, 04 Nov 2024 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-05-04T12:40:48.260Z

Reserved: 2024-02-27T18:42:55.950Z

Link: CVE-2021-47001

cve-icon Vulnrichment

Updated: 2025-04-11T22:03:12.324Z

cve-icon NVD

Status : Modified

Published: 2024-02-28T09:15:38.213

Modified: 2025-04-11T22:15:28.457

Link: CVE-2021-47001

cve-icon Redhat

Severity : Low

Publid Date: 2024-02-28T00:00:00Z

Links: CVE-2021-47001 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses