File 0076-9pfs-fix-potential-host-memory-leak.patch of Package qemu-linux-user

Overview Repositories Revisions Requests Users Attributes Meta

File 0076-9pfs-fix-potential-host-memory-leak.patch of Package qemu-linux-user (Revision e0f9dcc16d55c906527d8cc29480b946)

Currently displaying revision e0f9dcc16d55c906527d8cc29480b946 , Show latest

From cf2c3154009ee58830a2835389e983d1f49003b5 Mon Sep 17 00:00:00 2001
From: Li Qiang <liqiang6-s@360.cn>
Date: Mon, 17 Oct 2016 14:13:58 +0200
Subject: [PATCH] 9pfs: fix potential host memory leak in v9fs_read

In 9pfs read dispatch function, it doesn't free two QEMUIOVector
object thus causing potential memory leak. This patch avoid this.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Signed-off-by: Greg Kurz <groug@kaod.org>
(cherry picked from commit e95c9a493a5a8d6f969e86c9f19f80ffe6587e19)
[BR: CVE-2016-8577 BSC#1003893]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 hw/9pfs/9p.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index 028dbc372b..d948162d2b 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -1807,14 +1807,15 @@ static void v9fs_read(void *opaque)
             if (len < 0) {
                 /* IO error return the error */
                 err = len;
-                goto out;
+                goto out_free_iovec;
             }
         } while (count < max_count && len > 0);
         err = pdu_marshal(pdu, offset, "d", count);
         if (err < 0) {
-            goto out;
+            goto out_free_iovec;
         }
         err += offset + count;
+out_free_iovec:
         qemu_iovec_destroy(&qiov);
         qemu_iovec_destroy(&qiov_full);
     } else if (fidp->fid_type == P9_FID_XATTR) {

Places

File 0076-9pfs-fix-potential-host-memory-leak.patch of Package qemu-linux-user (Revision e0f9dcc16d55c906527d8cc29480b946)

Places