An issue has been found in shapelib, a library for reading and writing
ESRI Shapefiles.
The issue is related to a double free, which results in a crash and a
denial of service.
For Debian 11 bullseye, this problem has been fixed in version
1.5.0-2+deb11u1.
We recommend that you upgrade your shapelib packages.
For the detailed security status of shapelib please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/shapelib
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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