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ad9d24c942
Syzbot reported slab-out-of-bounds Read in
qrtr_endpoint_post. The problem was in wrong
_size_ type:
if (len != ALIGN(size, 4) + hdrlen)
goto err;
If size from qrtr_hdr is 4294967293 (0xfffffffd), the result of
ALIGN(size, 4) will be 0. In case of len == hdrlen and size == 4294967293
in header this check won't fail and
skb_put_data(skb, data + hdrlen, size);
will read out of bound from data, which is hdrlen allocated block.
Fixes:
|
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---|---|---|
.. | ||
Kconfig | ||
Makefile | ||
mhi.c | ||
ns.c | ||
qrtr.c | ||
qrtr.h | ||
smd.c | ||
tun.c |