Code execution via an action link in a PDF document was fixed in the
KDE document viewer Okular.
For Debian 9 stretch, this problem has been fixed in version
We recommend that you upgrade your okular packages.
For the detailed security status of okular please refer to
its security tracker page at:
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
Debian LTS Advisory DLA-2856-1 [email protected]
https://www.debian.org/lts/security/ Adrian Bunk
December 27, 2021 https://wiki.debian.org/LTS
Version : 4:16.08.2-1+deb9u2