What is CVE-2017-10921?

CVE-2017-10921 is a critical-severity vulnerability in Xen, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 10.0/10. Published 2017-07-05.

How severe is CVE-2017-10921?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Buffer overflow in Xen

CVE-2017-10921

The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) o…

Vulnerability class: Buffer Overflow

EPSS: 0.025 (83.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Xen
N/a — versions n/a

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

cve@mitre.org (vendor-advisory, x_refsource_GENTOO)
cve@mitre.org (vendor-advisory, x_refsource_DEBIAN)
cve@mitre.org (vdb-entry, x_refsource_SECTRACK)
cve@mitre.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
cve@mitre.org (vendor-advisory, x_refsource_GENTOO)

Frequently asked questions

What is CVE-2017-10921?: CVE-2017-10921 is a critical-severity vulnerability in Xen, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 10.0/10. Published 2017-07-05.
How severe is CVE-2017-10921?: Critical severity. CVSS v3 base score is 10.0 out of 10.