Vulnerability Description
An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of I/O activity. The issue relates to misuse of guest physical addresses when a configuration has CONFIG_XEN_UNPOPULATED_ALLOC but not CONFIG_XEN_BALLOON_MEMORY_HOTPLUG.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.9.0, <= 5.11.3 |
| Xen | Xen | - |
| Netapp | Cloud Backup | - |
| Netapp | Solidfire Baseboard Management Controller Firmware | - |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/03/05/2Mailing ListPatchThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-369.htmlPatchVendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88221
- https://security.netapp.com/advisory/ntap-20210409-0001/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/03/05/2Mailing ListPatchThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-369.htmlPatchVendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=88221
- https://security.netapp.com/advisory/ntap-20210409-0001/Third Party Advisory
FAQ
What is CVE-2021-28039?
CVE-2021-28039 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An issue was discovered in the Linux kernel 5.9.x through 5.11.3, as used with Xen. In some less-common configurations, an x86 PV guest OS user can crash a Dom0 or driver domain via a large amount of ...
How severe is CVE-2021-28039?
CVE-2021-28039 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-28039?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Xen Xen, Netapp Cloud Backup, Netapp Solidfire Baseboard Management Controller Firmware.