CVE-2017-10918
Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to obtain privileged host OS access, aka XSA-222.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.67%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to obtain privileged host OS access, aka XSA-222.
- CVSS 3.0
- 10.0 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 3.67% probability · 90th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- xen/xen
- Source
- cve@mitre.org
EPSS 3.7% 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.debian.org/security/2017/dsa-3969
- http://www.securityfocus.com/bid/99161Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038732
- https://security.gentoo.org/glsa/201708-03
- https://security.gentoo.org/glsa/201710-17
- https://xenbits.xen.org/xsa/advisory-222.htmlMailing List, Mitigation, Third Party Advisory
- http://www.debian.org/security/2017/dsa-3969
- http://www.securityfocus.com/bid/99161Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1038732
- https://security.gentoo.org/glsa/201708-03
- https://security.gentoo.org/glsa/201710-17
- https://xenbits.xen.org/xsa/advisory-222.htmlMailing List, Mitigation, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.