* Does tkill/tgkill leak info from kernel stack?
@ 2010-01-06 0:20 Eugene Kapun
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From: Eugene Kapun @ 2010-01-06 0:20 UTC (permalink / raw)
To: linux-kernel
As I can see, tkill and tgkill syscalls call do_tkill (kernel/signal.c:2336).
This function doesn't clear info struct, so it would contain what was on kernel
stack previously. And because SI_TKILL < 0, precautions in copy_siginfo_to_user
(kernel/signal.c:2154) won't prevent this data from going to userspace. Is it a
bug?
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2010-01-06 0:20 Does tkill/tgkill leak info from kernel stack? Eugene Kapun
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