A gnutls26 security update has been released for Debian GNU/Linux

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Debian Security Advisory DSA-2441-1 security@debian.org
http://www.debian.org/security/ Florian Weimer
March 25, 2012 http://www.debian.org/security/faq
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Package : gnutls26
Vulnerability : missing bounds check
Problem type : remote
Debian-specific: no
CVE ID : CVE-2012-1573

Matthew Hall discovered that GNUTLS does not properly handle truncated
GenericBlockCipher structures nested inside TLS records, leading to
crashes in applications using the GNUTLS library.

For the stable distribution (squeeze), this problem has been fixed in
version 2.8.6-1+squeeze2.

For the unstable distribution (sid), this problem has been fixed in
version 2.12.18-1 of the gnutls26 package and version 3.0.17-2 of the
gnutls28 package.

We recommend that you upgrade your gnutls26 packages.

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