A qt4-x11 security update has been released for Debian GNU/Linux 8 Extended LTS to address multiple out-of-bounds error.

ELA-554-1 qt4-x11 security update

Package qt4-x11
Version 4:4.8.6+git64-g5dc8b2b+dfsg-3+deb8u4
Related CVEs CVE-2018-19872 CVE-2021-3481 CVE-2021-45930

Multiple out-of-bounds error were discovered in qt4-x11. The highest threat from CVE-2021-3481 (at least) is to data confidentiality the application availability.

For Debian 8 jessie, these problems have been fixed in version 4:4.8.6+git64-g5dc8b2b+dfsg-3+deb8u4.

We recommend that you upgrade your qt4-x11 packages.

Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/

  ELA-554-1 qt4-x11 security update