1. Ubuntu Security Notices
  2. USN-5323-1

USN-5323-1: NBD vulnerabilities

Publication date

14 March 2022

Overview

Several security issues were fixed in NBD.

Releases

Packages

  • nbd - Network Block Device protocol

Details

It was discovered that NBD incorrectly handled name length fields. A remote
attacker could use this issue to cause NBD to crash, resulting in a denial
of service, or possibly execute arbitrary code.

It was discovered that NBD incorrectly handled name length fields. A remote
attacker could use this issue to cause NBD to crash, resulting in a denial
of service, or possibly execute arbitrary code.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
21.10 impish nbd-server –  1:3.21-1ubuntu0.1
20.04 focal nbd-server –  1:3.20-1ubuntu0.1
18.04 bionic nbd-server –  1:3.16.2-1ubuntu0.2

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References

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