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Debian Security Advisory DSA-3224-1                   security@debian.org
http://www.debian.org/security/                        Moritz Muehlenhoff
April 12, 2015                         http://www.debian.org/security/faq
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Package        : libx11
CVE ID         : CVE-2013-7439

Abhishek Arya discovered a buffer overflow in the MakeBigReq macro
provided by libx11, which could result in denial of service or the
execution of arbitrary code.

Several other xorg packages (e.g. libxrender) will be recompiled against
the fixed package after the release of this update. For detailed
information on the status of recompiled packages please refer to the
Debian Security Tracker at
https://security-tracker.debian.org/tracker/CVE-2013-7439

For the stable distribution (wheezy), this problem has been fixed in
version 2:1.5.0-1+deb7u2.

For the upcoming stable distribution (jessie), this problem has been
fixed in version 2:1.6.0-1.

For the unstable distribution (sid), this problem has been fixed in
version 2:1.6.0-1.

We recommend that you upgrade your libx11 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org