CVE-2013-4537
s->arglen is taken from wire and used as idx
in ssi_sd_transfer().
Validate it before access.
Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
---
hw/sd/ssi-sd.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/sd/ssi-sd.c b/hw/sd/ssi-sd.c
index 3273c8a..d9c4aee 100644
--- a/hw/sd/ssi-sd.c
+++ b/hw/sd/ssi-sd.c
@@ -230,6 +230,9 @@ static int ssi_sd_load(QEMUFile *f, void *opaque, int
version_id)
for (i = 0; i < 5; i++)
s->response[i] = qemu_get_be32(f);
s->arglen = qemu_get_be32(f);
+ if (s->mode == SSI_SD_CMDARG && s->arglen > ARRAY_SIZE(s->cmdarg)) {
+ return -EINVAL;
+ }
s->response_pos = qemu_get_be32(f);
s->stopping = qemu_get_be32(f);
--
MST
