A PyPy security update has been released for Ubuntu Linux 20.04 LTS and 22.04 LTS.

[USN-6524-1] PyPy vulnerability

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Ubuntu Security Notice USN-6524-1
November 29, 2023

pypy3 vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

PyPy could be made to crash or run programs if it received specially
crafted data.

Software Description:
- pypy3: fast alternative implementation of Python 3.x

Details:

Nicky Mouha discovered that PyPy incorrectly handled certain SHA-3
operations. An attacker could possibly use this issue to cause PyPy to
crash, resulting in a denial of service, or possibly execute arbitrary
code.

Update instructions:

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

Ubuntu 22.04 LTS:
pypy3 7.3.9+dfsg-1ubuntu0.1

Ubuntu 20.04 LTS:
pypy3 7.3.1+dfsg-4ubuntu0.1

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

References:
https://ubuntu.com/security/notices/USN-6524-1
CVE-2022-37454

Package Information:
https://launchpad.net/ubuntu/+source/pypy3/7.3.9+dfsg-1ubuntu0.1
https://launchpad.net/ubuntu/+source/pypy3/7.3.1+dfsg-4ubuntu0.1