The TSB I-TLB load implementation in arch/sparc/kernel/tsb.S in the
Linux kernel before 2.6.33 on the SPARC platform does not properly
obtain the value of a certain _PAGE_EXEC_4U bit and consequently does
not properly implement a non-executable stack, which makes it easier
for context-dependent attackers to exploit stack-based buffer
overflows via a crafted application.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[linux-sparc] 20100219 Execution possible in non-executable mappings in recent 2.6 kernels
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