CVE-2016-1570 — Improper Input Validation in XEN

CWE-20 — Improper Input Validation7 documents6 sources
Severity
8.5HIGHNVD
EPSS
0.2%
top 57.45%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
XENDebian XEN
Timeline
PublishedJan 22
Latest updateMay 14

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 vector

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 1.8 | Impact: 6.0

Affected Packages3 packages

▶debiandebian/xen< xen 4.8.0~rc3-1 (bookworm)
▶Debianxen/xen< 4.8.0~rc3-1+3
▶NVDxen/xen29 versions+28

🔴Vulnerability Details

2
GHSA
GHSA-w7v4-4295-6vg3: The PV superpage functionality in arch/x86/mm↗2022-05-14
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OSV
CVE-2016-1570: The PV superpage functionality in arch/x86/mm↗2016-01-22
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📋Vendor Advisories

2
Red Hat
xen: PV superpage functionality missing sanity checks↗2016-01-20
▶
Debian
CVE-2016-1570: xen - The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x t...↗2016
▶

💬Community

2
Bugzilla
CVE-2016-1570 xen: PV superpage functionality missing sanity checks [fedora-all]↗2016-01-20
▶
Bugzilla
CVE-2016-1570 xen: PV superpage functionality missing sanity checks↗2016-01-07
▶