qemu/0026-9pfs-fix-memory-leak-in-v9fs_link.patch
Cole Robinson a0f61528af CVE-2016-6836: vmxnet: Information leakage in vmxnet3_complete_packet (bz #1366370)
CVE-2016-7909: pcnet: Infinite loop in pcnet_rdra_addr (bz #1381196)
CVE-2016-7994: virtio-gpu: memory leak in resource_create_2d (bz #1382667)
CVE-2016-8577: 9pfs: host memory leakage in v9fs_read (bz #1383286)
CVE-2016-8578: 9pfs: potential NULL dereferencein 9pfs routines (bz #1383292)
CVE-2016-8668: OOB buffer access in rocker switch emulation (bz #1384898)
CVE-2016-8669: divide by zero error in serial_update_parameters (bz #1384911)
CVE-2016-8909: intel-hda: infinite loop in dma buffer stream (bz #1388053)
Infinite loop vulnerability in a9_gtimer_update (bz #1388300)
CVE-2016-9101: eepro100: memory leakage at device unplug (bz #1389539)
CVE-2016-9103: 9pfs: information leakage via xattr (bz #1389643)
CVE-2016-9102: 9pfs: memory leakage when creating extended attribute (bz #1389551)
CVE-2016-9104: 9pfs: integer overflow leading to OOB access (bz #1389687)
CVE-2016-9105: 9pfs: memory leakage in v9fs_link (bz #1389704)
CVE-2016-9106: 9pfs: memory leakage in v9fs_write (bz #1389713)
CVE-2016-9381: xen: incautious about shared ring processing (bz #1397385)
CVE-2016-9921: Divide by zero vulnerability in cirrus_do_copy (bz #1399054)
CVE-2016-9776: infinite loop while receiving data in mcf_fec_receive (bz #1400830)
CVE-2016-9845: information leakage in virgl_cmd_get_capset_info (bz #1402247)
CVE-2016-9846: virtio-gpu: memory leakage while updating cursor data (bz #1402258)
CVE-2016-9907: usbredir: memory leakage when destroying redirector (bz #1402266)
CVE-2016-9911: usb: ehci: memory leakage in ehci_init_transfer (bz #1402273)
CVE-2016-9913: 9pfs: memory leakage via proxy/handle callbacks (bz #1402277)
CVE-2016-10028: virtio-gpu-3d: OOB access while reading virgl capabilities (bz #1406368)
CVE-2016-9908: virtio-gpu: information leakage in virgl_cmd_get_capset (bz #1402263)
CVE-2016-9912: virtio-gpu: memory leakage when destroying gpu resource (bz #1402285)
2017-01-16 16:04:06 -05:00

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Diff

From: Li Qiang <liqiang6-s@360.cn>
Date: Mon, 17 Oct 2016 14:13:58 +0200
Subject: [PATCH] 9pfs: fix memory leak in v9fs_link
The v9fs_link() function keeps a reference on the source fid object. This
causes a memory leak since the reference never goes down to 0. This patch
fixes the issue.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Reviewed-by: Greg Kurz <groug@kaod.org>
[groug, rephrased the changelog]
Signed-off-by: Greg Kurz <groug@kaod.org>
(cherry picked from commit 4c1586787ff43c9acd18a56c12d720e3e6be9f7c)
---
hw/9pfs/9p.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index 9c18322..a4ee24f 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -2396,6 +2396,7 @@ static void v9fs_link(void *opaque)
if (!err) {
err = offset;
}
+ put_fid(pdu, oldfidp);
out:
put_fid(pdu, dfidp);
out_nofid: