CVE-2021-47001

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-47001

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47001.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-47001

Related

Published

2024-02-28T09:15:38Z

Modified

2024-09-18T01:00:22Z

Summary

[none]

Details

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/ rpcrdmapostrecvs() 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 rpcrdmarepcreate() enough to allow the send side to post a bunch of RPC Calls before the Receive completion handler can invoke ibpostrecv().

References

Affected packages

Debian:11 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.38-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.38-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.38-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}