Several flaws were found in tiffcrop, a program distributed by tiff, the Tag Image File Format (TIFF) library and tools. A specially crafted tiff file can lead to an out-of-bounds write or read resulting in a denial of service.
For the stable distribution (bullseye), this problem has been fixed in version 4.2.0-1+deb11u4.
We recommend that you upgrade your tiff packages.
For the detailed security status of tiff please refer to its security tracker page at: \ https://security-tracker.debian.org/tracker/tiff