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[SECURITY] [DLA 1567-1] gthumb security update

Package        : gthumb
Version        : 3:3.3.1-2.1+deb8u1
CVE ID         : CVE-2018-18718
Debian Bug     : #912290

CVE-2018-18718 - CWE-415: Double Free
The product calls free() twice on the same memory address, potentially
leading to modification of unexpected memory locations.

There is a suspected double-free bug with
static void add_themes_from_dir() dlg-contact-sheet.c. This method
involves two successive calls of g_free(buffer) (line 354 and 373),
and is likely to cause double-free of the buffer. One possible fix
could be directly assigning the buffer to NULL after the first call
of g_free(buffer). Thanks Tianjun Wu

For Debian 8 "Jessie", this problem has been fixed in version

We recommend that you upgrade your gthumb 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

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