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Change History

In the Linux kernel, the following vulnerability has been resolved:

net: qrtr: fix OOB Read in qrtr_endpoint_post

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 o

kernel.org https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe [No types assigned]

kernel.org https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f [No types assigned]

kernel.org https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8 [No types assigned]

kernel.org https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d [No types assigned]

kernel.org https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6 [No types assigned]