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nbd/client: fix drop_sync [CVE-2017-2630] 

Comparison symbol is misused. It may lead to memory corruption.
Introduced in commit 7d3123e.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20170203154757.36140-6-vsementsov@virtuozzo.com>
[eblake: add CVE details, update conditional]
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170307151627.27212-1-eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

(cherry picked from commit 2563c9c6b8)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2017-03-07 09:16:27 -06:00 committed by Michael Roth
parent a3aeb9f09d
commit 8029d55a93
1 changed files with 1 additions and 1 deletions
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nbd/client.c
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@ -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));