A transmission security update has been released for Debian GNU/Linux 9 LTS to address an use-after-free issue in libtransmission/variant.c.

DLA 2305-1: transmission security update

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Debian LTS Advisory DLA-2305-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
August 01, 2020   https://wiki.debian.org/LTS
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Package : transmission
Version : 2.92-2+deb9u2
CVE ID : CVE-2018-10756
Debian Bug : 961461

Use-after-free in libtransmission/variant.c in Transmission before
3.00 allows remote attackers to cause a denial of service (crash)
or possibly execute arbitrary code via a crafted torrent file.

For Debian 9 stretch, this problem has been fixed in version
2.92-2+deb9u2.

We recommend that you upgrade your transmission packages.

For the detailed security status of transmission please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/transmission

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