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Unrated severityNVD Advisory· Published Jun 19, 2024· Updated May 4, 2025

vduse: check that offset is within bounds in get_config()

CVE-2021-47604

Description

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.

Affected products

48

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

2

News mentions

0

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