For the oldstable distribution (bookworm), this problem has been fixed
in version 1.21.1+ds2-1+deb12u1.
For the stable distribution (trixie), this problem has been fixed in
version 1.25.1+ds1-6+deb13u1.
We recommend that you upgrade your mupdf packages.
For the detailed security status of mupdf please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/mupdf
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/
