Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c8a6153b6c59d95c0e091f053f6f180952ade91e before ebbbc5fea3f648175df1aa3f127c78eb0252cc2a; affected c8a6153b6c59d95c0e091f053f6f180952ade91e before dc1db0060c02d119fd4196924eff2d1129e9a442 |
| Linux / Linux | affected 5.15; unaffected 0 before 5.15; unaffected 5.15.11 through 5.15.*; unaffected 5.16 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ebbbc5fea3f648175df1aa3f127c78eb0252cc2a
- https://git.kernel.org/stable/c/dc1db0060c02d119fd4196924eff2d1129e9a442
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.