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authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>2009-09-15 02:44:36 -0400
committerIngo Molnar <mingo@elte.hu>2009-09-15 03:53:31 -0400
commitb3e62e35058fc744ac794611f4e79bcd1c5a4b83 (patch)
tree797092fc19f9af8b6e5242c1987137dd362f51bc /arch/ia64/scripts
parent74fca6a42863ffacaf7ba6f1936a9f228950f657 (diff)
perf_counter: Fix buffer overflow in perf_copy_attr()
If we pass a big size data over perf_counter_open() syscall, the kernel will copy this data to a small buffer, it will cause kernel crash. This bug makes the kernel unsafe and non-root local user can trigger it. Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Paul Mackerras <paulus@samba.org> Cc: <stable@kernel.org> LKML-Reference: <4AAF37D4.5010706@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/ia64/scripts')
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