CVE-2017-14319

A grant unmapping issue was discovered in Xen through 4.9.x. When removing or replacing a grant mapping, the x86 PV specific path needs to make sure page table entries remain in sync with other accounting done. Although the identity of the page frame was validated correctly, neither the presence of the mapping nor page writability were taken into account.

• http://www.securityfocus.com/bid/100819Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039351Third Party Advisory, VDB Entry
• http://xenbits.xen.org/xsa/advisory-234.htmlPatch, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
• https://support.citrix.com/article/CTX227185
• https://www.debian.org/security/2017/dsa-4050
• http://www.securityfocus.com/bid/100819Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1039351Third Party Advisory, VDB Entry
• http://xenbits.xen.org/xsa/advisory-234.htmlPatch, Vendor Advisory
• https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
• https://support.citrix.com/article/CTX227185
• https://www.debian.org/security/2017/dsa-4050

Published

Sep 12, 2017

Last Modified

Jun 17, 2026

Status

Modified

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