CVE-2021-47604

In the Linux kernel, the following vulnerability has been resolved: vduse: check that offset is within bounds in get_config() This condition checks "len" but it does not check "offset" and that could result in an out of bounds read if "offset > dev->config_size". The problem is that since both variables are unsigned the "dev->config_size - offset" subtraction would result in a very high unsigned value. I think these checks might not be necessary because "len" and "offset" are supposed to already have been validated using the vhost_vdpa_config_validate() function. But I do not know the code perfectly, and I like to be safe.

The following products are affected by CVE-2021-47604 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47604.

URL	Resource
https://git.kernel.org/stable/c/dc1db0060c02d119fd4196924eff2d1129e9a442
https://git.kernel.org/stable/c/ebbbc5fea3f648175df1aa3f127c78eb0252cc2a
https://lore.kernel.org/linux-cve-announce/2024061923-CVE-2021-47604-e309@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47604
https://www.cve.org/CVERecord?id=CVE-2021-47604