The IA32 system call emulation functionality in Linux kernel 2.4.x and 2.6.x before 2.6.22.7, when running on the x86_64 architecture, does not zero extend the eax register after the 32bit entry path to ptrace is used, which might allow local users to gain privileges by triggering an out-of-bounds access to the system call table using the %RAX register.
Novell Linux Desktop 9 for x86 Novell Linux Desktop 9 for x86_64 Open Enterprise Server openSUSE 10.3 SUSE CORE 9 for AMD64 and Intel EM64T SUSE LINUX 10.0 SUSE LINUX 10.1 SUSE Linux Enterprise Server 10 SP3 SuSE Linux Enterprise Server 8 for AMD64 SuSE Linux Enterprise Server 8 for IBM iSeries and IBM pSeries SuSE Linux Enterprise Server 8 for IBM zSeries SuSE Linux Enterprise Server 8 for IPF SUSE Linux Enterprise Server for SAP Applications 12 SP3 SuSE Linux Openexchange Server 4 SUSE LINUX Retail Solution 8 SuSE Linux School Server for i386 SuSE Linux Standard Server 8 SUSE OpenStack Cloud 8 SUSE OpenStack Cloud Crowbar 8 UnitedLinux 1.0