From 9686b3007afb15162cb2b5ca3219d906cc849a60 Mon Sep 17 00:00:00 2001
From: Ryan Gonzalez <rymg19@gmail.com>
Date: Mon, 25 Mar 2019 13:00:15 -0500
Subject: [PATCH] run: Only compare the lowest 32 ioctl arg bits for TIOCSTI

Closes #2782.

Closes: #2783
Approved by: alexlarsson
---
 common/flatpak-run.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/common/flatpak-run.c b/common/flatpak-run.c
index b4f2c475..0e6b3141 100644
--- a/common/flatpak-run.c
+++ b/common/flatpak-run.c
@@ -2122,7 +2122,7 @@ setup_seccomp (FlatpakBwrap   *bwrap,
     {SCMP_SYS (clone), &SCMP_A0 (SCMP_CMP_MASKED_EQ, CLONE_NEWUSER, CLONE_NEWUSER)},
 
     /* Don't allow faking input to the controlling tty (CVE-2017-5226) */
-    {SCMP_SYS (ioctl), &SCMP_A1 (SCMP_CMP_EQ, (int) TIOCSTI)},
+    {SCMP_SYS (ioctl), &SCMP_A1 (SCMP_CMP_MASKED_EQ, 0xFFFFFFFFu, (int) TIOCSTI)},
   };
 
   struct
-- 
2.21.0