vulnerability
FreeBSD: VID-90BECF7C-1ACF-11E7-970F-002590263BF5 (CVE-2017-7228): xen-kernel -- broken check in memory_exchange() permits PV guest breakout
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Apr 4, 2017 | Apr 10, 2017 | May 7, 2019 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Apr 4, 2017
Added
Apr 10, 2017
Modified
May 7, 2019
Description
An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The earlier XSA-29 fix introduced an insufficient check on XENMEM_exchange input, allowing the caller to drive hypervisor memory accesses outside of the guest provided input/output arrays.
Solution
freebsd-upgrade-package-xen-kernel
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