From: Alan Cox <alan@linux.intel.com>
Date: Thu, 23 Nov 2017 21:45:08 +0000 (+0000)
Subject: filesys: Fix corruption and buffer leak on bad input address
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=0be28c68753980b5de3a30aa7069c7305c30ff41;p=FUZIX.git

filesys: Fix corruption and buffer leak on bad input address
---

diff --git a/Kernel/filesys.c b/Kernel/filesys.c
index 8153c6f8..73691179 100644
--- a/Kernel/filesys.c
+++ b/Kernel/filesys.c
@@ -30,7 +30,9 @@ inoptr n_open(char *uname, inoptr *parent)
 
     if (ugets(uname, tb, 512) == -1) {
         udata.u_error = EFAULT;
-        *parent = NULLINODE;
+        if (parent)
+            *parent = NULLINODE;
+        pathfree(tb);
         return NULLINODE;
     }