Adobe has published an advisory, describing the presence of a critical vulnerability: This U3D memory corruption vulnerability (CVE-2011-2462) could cause a crash and potentially allow an attacker to take control of the affected system. There are reports that the vulnerability is being actively exploited in the wild in limited, targeted attacks against Adobe Reader 9.x on Windows. Adobe Reader X Protected Mode and Acrobat X Protected View mitigations would prevent an exploit of this kind from executing. in versions of Adobe Reader v9.4.6 and earlier versions for UNIX operating system. According to the advisory [1], the Adobe Reader 9.x update for UNIX operating system is planned for January 10, 2012. References: [1] http://www.adobe.com/support/security/advisories/apsa11-04.html
http://blogs.adobe.com/asset/2011/12/background-on-cve-2011-2462.html
Updated 9.4.7 packages are now available for Linux: http://www.adobe.com/support/security/bulletins/apsb11-30.html
This issue has been addressed in following products: Extras for RHEL 4 Supplementary for Red Hat Enterprise Linux 6 Supplementary for Red Hat Enterprise Linux 5 Via RHSA-2012:0011 https://rhn.redhat.com/errata/RHSA-2012-0011.html