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CVE-2020-29570

Published: Dec 15, 2020

Modified: Aug 4, 2024

PUBLISHED

Description

An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system.

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

References

https://xenbits.xenproject.org/xsa/advisory-358.html

x_refsource_MISC

vendor-advisory

x_refsource_DEBIAN

[oss-security] 20201216 Xen Security Advisory 358 v5 (CVE-2020-29570) - FIFO event channels control block related ordering

mailing-list

x_refsource_MLIST

FEDORA-2020-64859a826b

vendor-advisory

x_refsource_FEDORA

FEDORA-2020-df772b417b

vendor-advisory

x_refsource_FEDORA

vendor-advisory

x_refsource_GENTOO

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