From 8b64f213a14085028f5dce5c2fb99eb7b9ccb1ee Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Thu, 21 Feb 2019 21:33:52 +0100
Subject: [PATCH] Kernel: sigpending() and sigprocmask() should validate memory
 writes.

---
 Kernel/Process.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index f39a8d4680..75771d1a2b 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -1820,7 +1820,7 @@ int Process::sys$dup2(int old_fd, int new_fd)
 int Process::sys$sigprocmask(int how, const sigset_t* set, sigset_t* old_set)
 {
     if (old_set) {
-        if (!validate_read_typed(old_set))
+        if (!validate_write_typed(old_set))
             return -EFAULT;
         *old_set = m_signal_mask;
     }
@@ -1846,7 +1846,7 @@ int Process::sys$sigprocmask(int how, const sigset_t* set, sigset_t* old_set)
 
 int Process::sys$sigpending(sigset_t* set)
 {
-    if (!validate_read_typed(set))
+    if (!validate_write_typed(set))
         return -EFAULT;
     *set = m_pending_signals;
     return 0;