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[Qemu-block] [PATCH v4 1/8] nbd/client: fix drop_sync [CVE-2017-2630]
From: |
Eric Blake |
Subject: |
[Qemu-block] [PATCH v4 1/8] nbd/client: fix drop_sync [CVE-2017-2630] |
Date: |
Mon, 20 Feb 2017 20:42:41 -0600 |
From: Vladimir Sementsov-Ogievskiy <address@hidden>
Comparison symbol is misused. It may lead to memory corruption.
Introduced in commit 7d3123e.
Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Message-Id: <address@hidden>
[eblake: add CVE details]
Signed-off-by: Eric Blake <address@hidden>
---
nbd/client.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/nbd/client.c b/nbd/client.c
index ffb0743..0d16cd1 100644
--- a/nbd/client.c
+++ b/nbd/client.c
@@ -94,7 +94,7 @@ static ssize_t drop_sync(QIOChannel *ioc, size_t size)
char small[1024];
char *buffer;
- buffer = sizeof(small) < size ? small : g_malloc(MIN(65536, size));
+ buffer = sizeof(small) > size ? small : g_malloc(MIN(65536, size));
while (size > 0) {
ssize_t count = read_sync(ioc, buffer, MIN(65536, size));
--
2.9.3