8.5

CVE-2016-1570: xen Improper Input Validation

Modified
AliasesUBUNTU-CVE-2016-1570DEBIAN-CVE-2016-1570
Published 22-01-2016Last modified 05-08-2024

Vulnerability summary

CVE-2016-1570 is a high (CVSS 8.5) Improper Input Validation vulnerability in xen. EPSS estimates a 1.15% chance of exploitation in the next 30 days, higher than 67% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 8.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.5/10
010
High · v3.0 (NVD)
EPSS score
1.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 6
DLA-479-1DSA-3519-1MGASA-2016-0098OPENSUSE-SU-2024:10196-1SUSE-SU-2016:0873-1SUSE-SU-2016:0955-1

Timeline

  1. 22-01-2016
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.15%

Chance of exploitation in the next 30 days

Percentile

67%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • xen< 4.8.0~rc3-1
Ubuntu1 product
  • xen< 4.4.2-0ubuntu0.14.04.5
Xen1 product
  • xen3.4.0 | 3.4.1 | 4.1.0 | 4.1.1 | 4.1.2 | 4.1.3 | 4.1.4 | 4.1.5 | 4.1.6 | 4.1.6.1 | 4.2.0 | 4.2.1 | 4.2.2 | 4.2.3 | 4.2.4 | 4.2.5 | 4.3.0 | 4.3.1 | 4.3.2 | 4.3.3 | 4.3.4 | 4.4.0 | 4.4.0:rc1 | 4.4.1 | 4.4.2 | 4.4.3 | 4.5.0 | 4.5.1 | 4.5.2 | 4.6.0

3 vendors · 3 products

References

6 links