Medium severity6.5NVD Advisory· Published Mar 5, 2021· Updated Jun 17, 2026
CVE-2021-28039
CVE-2021-28039
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.
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Affected products
6- cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
- Linux/Linux kerneldescription
Patches
Vulnerability mechanics
References
4- www.openwall.com/lists/oss-security/2021/03/05/2nvdMailing ListPatchThird Party Advisory
- xenbits.xen.org/xsa/advisory-369.htmlnvdPatchVendor Advisory
- security.netapp.com/advisory/ntap-20210409-0001/nvdThird Party Advisory
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/nvd
News mentions
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