Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 5.15.11 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/dc1db0060c02d119fd4196924eff2d1129e9a442Patch
- https://git.kernel.org/stable/c/ebbbc5fea3f648175df1aa3f127c78eb0252cc2aPatch
- https://git.kernel.org/stable/c/dc1db0060c02d119fd4196924eff2d1129e9a442Patch
- https://git.kernel.org/stable/c/ebbbc5fea3f648175df1aa3f127c78eb0252cc2aPatch
FAQ
What is CVE-2021-47604?
CVE-2021-47604 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 coul...
How severe is CVE-2021-47604?
CVE-2021-47604 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-47604?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.