vulnerability
Debian: CVE-2021-47604: linux -- security update
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
6 | (AV:L/AC:L/Au:S/C:C/I:N/A:C) | 06/19/2024 | 07/30/2024 | 01/30/2025 |
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.
Solution

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