2.6.24-rc3-git7

 fs

diff --git a/fs/exec.c b/fs/exec.c
index 4ccaaa4..282240a 100644
--- a/fs/exec.c
+++ b/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)