CVE-2016-1570
published 2016-01-22CVE-2016-1570: 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…
PriorityP338high8.5CVSS 3.0
AVNACHPRLUINSCCHIHAH
EPSS
1.15%
63.4th percentile
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.
Affected
34 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | xen | < xen 4.8.0~rc3-1 (bookworm) | xen 4.8.0~rc3-1 (bookworm) |
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CVSS provenance
nvdv3.08.5HIGHCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
nvdv2.06.9MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C
osv8.5HIGH
vendor_debian8.5HIGH
vendor_redhat8.5HIGH
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Red Hat
xen: PV superpage functionality missing sanity checks
vendor_redhat·2016-01-20·CVSS 8.5
CVE-2016-1570 [HIGH] xen: PV superpage functionality missing sanity checks
xen: PV superpage functionality missing sanity checks
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.
Package: xen (Red Hat Enterprise Linux 5) - Not affected
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...
vendor_debian·2016·CVSS 8.5
CVE-2016-1570 [HIGH] 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...
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.
Scope: local
bookworm: resolved (fixed in 4.8.0~rc3-1)
bullseye: resolved (fixed in 4.8.0~rc3-1)
forky: resolved (fixed in 4.8.0~rc3-1)
sid: resolved (fixed in 4.8.0~rc3-1)
trixie: resolved (fixed in 4.8.0~rc3-1)
GHSA
GHSA-w7v4-4295-6vg3: The PV superpage functionality in arch/x86/mm
ghsa_unreviewed·2022-05-14
CVE-2016-1570 [HIGH] CWE-20 GHSA-w7v4-4295-6vg3: The PV superpage functionality in arch/x86/mm
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.
OSV
CVE-2016-1570: The PV superpage functionality in arch/x86/mm
osv·2016-01-22·CVSS 8.5
CVE-2016-1570 [HIGH] CVE-2016-1570: The PV superpage functionality in arch/x86/mm
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-1570 xen: PV superpage functionality missing sanity checks [fedora-all]
bugzilla·2016-01-20·CVSS 8.5
CVE-2016-1570 [HIGH] CVE-2016-1570 xen: PV superpage functionality missing sanity checks [fedora-all]
CVE-2016-1570 xen: PV superpage functionality missing sanity checks [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions
Bugzilla
CVE-2016-1570 xen: PV superpage functionality missing sanity checks
bugzilla·2016-01-07·CVSS 8.5
CVE-2016-1570 [HIGH] CVE-2016-1570 xen: PV superpage functionality missing sanity checks
CVE-2016-1570 xen: PV superpage functionality missing sanity checks
It was found that PV superpage functionality lacks certain validity checks on data being passed to the hypervisor by guests. This is the case for the page identifier (MFN) passed to MMUEXT_MARK_SUPER and MMUEXT_UNMARK_SUPER sub-ops of the HYPERVISOR_mmuext_op hypercall as well as for various forms of page table updates.
Use of the feature, which is disabled by default, may have unknown effects, ranging from information leaks through Denial of Service to privilege escalation.
Only systems which enable the PV superpage feature are affected. That is, only systems with an `allowsuperpage' setting on the hypervisor command line. Note that in Xen 4.0.x and 3.4.x the option is named `allowhugepage'. Xen versions 3.4.0, 3.4.1,
2016-01-22
Published