signal: fix information leak in copy_siginfo_from_user32

[firefly-linux-kernel-4.4.55.git] / kernel / signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index 836df8dac6ccd1230f21d20dc610429538cc59a1..00524cf6c41206db2da7b75ec66ceb712db26810 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3017,7 +3017,7 @@ COMPAT_SYSCALL_DEFINE3(rt_sigqueueinfo,
                        int, sig,
                        struct compat_siginfo __user *, uinfo)
 {
-       siginfo_t info;
+       siginfo_t info = {};
        int ret = copy_siginfo_from_user32(&info, uinfo);
        if (unlikely(ret))
                return ret;
@@ -3061,7 +3061,7 @@ COMPAT_SYSCALL_DEFINE4(rt_tgsigqueueinfo,
                        int, sig,
                        struct compat_siginfo __user *, uinfo)
 {
-       siginfo_t info;
+       siginfo_t info = {};
 
        if (copy_siginfo_from_user32(&info, uinfo))
                return -EFAULT;