CVE-2021-47240

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 of bound from data, which is hdrlen allocated block.

The following products are affected by CVE-2021-47240 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47240.

URL	Resource
https://git.kernel.org/stable/c/19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe
https://git.kernel.org/stable/c/26b8d10703a9be45d6097946b2b4011f7dd2c56f
https://git.kernel.org/stable/c/960b08dd36de1e341e3eb43d1c547513e338f4f8
https://git.kernel.org/stable/c/ad9d24c9429e2159d1e279dc3a83191ccb4daf1d
https://git.kernel.org/stable/c/f8111c0d7ed42ede41a3d0d393b104de0730a8a6
https://lore.kernel.org/linux-cve-announce/2024052141-CVE-2021-47240-b6f9@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47240
https://www.cve.org/CVERecord?id=CVE-2021-47240