From: Kangjie Lu <kangjielu@gmail.com>
To: akpm@linux-foundation.org
Cc: oleg@redhat.com, peterz@infradead.org, amanieu@gmail.com,
linux-kernel@vger.kernel.org, taesoo@gatech.edu, insu@gatech.edu,
Kangjie Lu <kjlu@gatech.edu>
Subject: [PATCH] infoleak fix2 in signal
Date: Tue, 3 May 2016 16:42:46 -0400 [thread overview]
Message-ID: <1462308166-6126-1-git-send-email-kjlu@gatech.edu> (raw)
The stack object “info” has a total size of 128 bytes; however,
only 32 bytes are initialized. The remaining uninitialized bytes
are sent to userland via send_signal.
Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
---
kernel/signal.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/signal.c b/kernel/signal.c
index f40f0b3..26fdb74 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1689,6 +1689,7 @@ static void do_notify_parent_cldstop(struct task_struct *tsk,
parent = tsk->real_parent;
}
+ memset(&info, 0, sizeof(info));
info.si_signo = SIGCHLD;
info.si_errno = 0;
/*
--
1.9.1
next reply other threads:[~2016-05-03 20:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 20:42 Kangjie Lu [this message]
2016-05-04 10:41 ` Oleg Nesterov
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