File 0050-usb-ehci-fix-memory-leak-in-ehci_pr.patch of Package qemu

Overview Repositories Revisions Requests Users Attributes Meta

File 0050-usb-ehci-fix-memory-leak-in-ehci_pr.patch of Package qemu (Revision b707be899935af742c5efb268ec4bb00)

Currently displaying revision b707be899935af742c5efb268ec4bb00 , Show latest

From 9d2c9efdb4d8b49689517271db3420c6de75278d Mon Sep 17 00:00:00 2001
From: Li Qiang <liqiang6-s@360.cn>
Date: Sun, 18 Sep 2016 19:48:35 -0700
Subject: [PATCH] usb: ehci: fix memory leak in ehci_process_itd

While processing isochronous transfer descriptors(iTD), if the page
select(PG) field value is out of bands it will return. In this
situation the ehci's sg list is not freed thus leading to a memory
leak issue. This patch avoid this.

Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit b16c129daf0fed91febbb88de23dae8271c8898a)
[BR: CVE-2016-7995 BSC#1003612]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 hw/usb/hcd-ehci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index b093db7..f4ece9a 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -1426,6 +1426,7 @@ static int ehci_process_itd(EHCIState *ehci,
             if (off + len > 4096) {
                 /* transfer crosses page border */
                 if (pg == 6) {
+                    qemu_sglist_destroy(&ehci->isgl);
                     return -1;  /* avoid page pg + 1 */
                 }
                 ptr2 = (itd->bufptr[pg + 1] & ITD_BUFPTR_MASK);

Places

File 0050-usb-ehci-fix-memory-leak-in-ehci_pr.patch of Package qemu (Revision b707be899935af742c5efb268ec4bb00)

Places