CVE-2017-14319
A grant unmapping issue was discovered in Xen through 4.9.x.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.41% probability · 35th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- xen/xen
- Source
- cve@mitre.org
EPSS 0.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.