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

pypy3 vulnerability
==========================================================================

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