Home/CVE/The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt bloc
CVE

CVE-2017-12134

The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt bloc

The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.

HIGH · CVSS 8.8 EPSS 0.00339
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-682Incorrect Calculation
▤

Affected Products & Versions

2
xenall versions
citrix xenserverall versions
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Aug 2017 · 02:29 PM
CVSS VectorCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
⚑

Vendor Advisories

7
usnUSN-3655-2
usnUSN-3655-1
suse-csafSUSE-SU-2017:2956-1
suse-csafSUSE-SU-2017:2869-1
suse-csafSUSE-SU-2017:2847-1
🔗

References & Sources

10
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.debian.org/security/2017/dsa-3981
http://www.openwall.com/lists/oss-security/2017/08/15/4Mailing ListMitigationThird Party Advisory
http://www.securityfocus.com/bid/100343Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1039176Third Party AdvisoryVDB Entry
http://xenbits.xen.org/xsa/advisory-229.htmlMitigationPatchVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1477656Issue TrackingMitigationPatchThird Party Advisory
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