An OpenEXR security update has been released for Ubuntu Linux 16.04 ESM and 18.04 LTS.

USN-5150-1: OpenEXR vulnerability

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Ubuntu Security Notice USN-5150-1
November 17, 2021

openexr vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM

Summary:

OpenEXR could be made to crash if it opened a specially crafted file.

Software Description:
- openexr: tools for the OpenEXR image format

Details:

It was discovered that OpenEXR incorrectly handled certain EXR image files.
An attacker could possibly use this issue to cause a crash.

Update instructions:

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

Ubuntu 18.04 LTS:
libopenexr22 2.2.0-11.1ubuntu1.9
openexr 2.2.0-11.1ubuntu1.9

Ubuntu 16.04 ESM:
libopenexr22 2.2.0-10ubuntu2.6+esm3
openexr 2.2.0-10ubuntu2.6+esm3

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

References:
  https://ubuntu.com/security/notices/USN-5150-1
CVE-2021-3941

Package Information:
  https://launchpad.net/ubuntu/+source/openexr/2.2.0-11.1ubuntu1.9