Vulnerability Description
xen/arm: Boot modules are not scrubbed The bootloader will load boot modules (e.g. kernel, initramfs...) in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the allocator. Unfortunately, it was discovered that modules will not be scrubbed on Arm.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | >= 4.12.0, <= 4.15.0 |
References
- https://security.gentoo.org/glsa/202107-30Third Party Advisory
- https://xenbits.xenproject.org/xsa/advisory-372.txtVendor Advisory
- https://security.gentoo.org/glsa/202107-30Third Party Advisory
- https://xenbits.xenproject.org/xsa/advisory-372.txtVendor Advisory
FAQ
What is CVE-2021-28693?
CVE-2021-28693 is a vulnerability with a CVSS score of 5.5 (MEDIUM). xen/arm: Boot modules are not scrubbed The bootloader will load boot modules (e.g. kernel, initramfs...) in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive da...
How severe is CVE-2021-28693?
CVE-2021-28693 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-28693?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen.