From 7196cd5c33a029c5596e679af5f81fd56f45aaea Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@woody.linux-foundation.org>
Date: Wed, 28 Nov 2007 10:58:22 -0800
Subject: [PATCH] --- yaml --- r: 74300 b: refs/heads/master c:
 9bfb52ad716e74785b2402b7ea17f30e0344b8e8 h: refs/heads/master v: v3

---
 [refs]          | 2 +-
 trunk/fs/exec.c | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 2554f78f6165..46116f2b044f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f95e0d1c2ad668c77aa4b272c076faf3aa0d631c
+refs/heads/master: 9bfb52ad716e74785b2402b7ea17f30e0344b8e8
diff --git a/trunk/fs/exec.c b/trunk/fs/exec.c
index 4ccaaa4b13b2..282240afe99e 100644
--- a/trunk/fs/exec.c
+++ b/trunk/fs/exec.c
@@ -1780,6 +1780,12 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
 	   but keep the previous behaviour for now. */
 	if (!ispipe && !S_ISREG(inode->i_mode))
 		goto close_fail;
+	/*
+	 * Dont allow local users get cute and trick others to coredump
+	 * into their pre-created files:
+	 */
+	if (inode->i_uid != current->fsuid)
+		goto close_fail;
 	if (!file->f_op)
 		goto close_fail;
 	if (!file->f_op->write)