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CVE-2021-28039

Published: Mar 5, 2021

Modified: Aug 3, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

http://xenbits.xen.org/xsa/advisory-369.html

[oss-security] 20210305 Xen Security Advisory 369 v2 (CVE-2021-28039) - Linux: special config may crash when trying to map foreign pages

mailing-list

https://security.netapp.com/advisory/ntap-20210409-0001/

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=882213990d32fd224340a4533f6318dd152be4b2

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