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| author | Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | 2013-06-28 09:49:46 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-06-29 11:29:08 -0700 |
| commit | 706b23bde27a391f0974df2a8351661770fa2e07 (patch) | |
| tree | 2b8d6be33dda49dcfc9ed8a5a688db4e8f56ac4c /lib/percpu-rwsem.c | |
| parent | bd2931b5cff6a3bf39bfe15fae051fb8229c0029 (diff) | |
| download | linux-706b23bde27a391f0974df2a8351661770fa2e07.tar.bz2 | |
Fix: kernel/ptrace.c: ptrace_peek_siginfo() missing __put_user() validation
This __put_user() could be used by unprivileged processes to write into
kernel memory. The issue here is that even if copy_siginfo_to_user()
fails, the error code is not checked before __put_user() is executed.
Luckily, ptrace_peek_siginfo() has been added within the 3.10-rc cycle,
so it has not hit a stable release yet.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Andrey Vagin <avagin@openvz.org>
Cc: Roland McGrath <roland@redhat.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Pedro Alves <palves@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/percpu-rwsem.c')
0 files changed, 0 insertions, 0 deletions