A gdal security update has been released for Debian GNU/Linux 11 to address a heap-based buffer overflow vulnerability.

DSA 5239-1: gdal security update

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Debian Security Advisory DSA-5239-1 security@debian.org
  https://www.debian.org/security/ Aron Xu
September 27, 2022   https://www.debian.org/security/faq
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Package : gdal
CVE ID : CVE-2021-45943

A heap-based buffer overflow vulnerability was discovered in gdal, a
Geospatial Data Abstraction Library, which could result in denial of
service or potentially the execution of arbitrary code, if a specially
crafted file is processed with the PCIDSK driver.

For the stable distribution (bullseye), this problem has been fixed in
version 3.2.2+dfsg-2+deb11u2.

We recommend that you upgrade your gdal packages.

For the detailed security status of gdal please refer to its security
tracker page at:
  https://security-tracker.debian.org/tracker/gdal

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://www.debian.org/security/