tif_getimage.c in LibTIFF, as used in GDAL has an integer overflow that potentially causes a heap-based buffer overflow via a crafted RGBA image, related to a "Negative-size-param" condition.

For Debian 8 Jessie, this problem has been fixed in version 1.10.1+dfsg-8+deb8u2.

We recommend that you upgrade your gdal packages.

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