The IA32 system call emulation functionality in
arch/x86/ia32/ia32entry.S in the Linux kernel before 2.6.36-rc4-git2
on the x86_64 platform does not zero extend the %eax register after
the 32-bit entry path to ptrace is used, which allows local users to
gain privileges by triggering an out-of-bounds access to the system
call table using the %rax register. NOTE: this vulnerability exists
because of a CVE-2007-4573 regression.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[oss-security] 20100916 CVE-2010-3301 kernel: IA32 System Call Entry Point Vulnerability
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