CVE-2017-12190
6.5 · MEDIUMThe bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the sa…
Overview
CVE-2017-12190 is a medium-severity vulnerability. It was published on November 22, 2017 and has a CVSS 3.0 base score of 6.5 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical description
The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O vector has small consecutive buffers belonging to the same page. The bio_add_pc_page function merges them into one, but the page reference is never dropped. This causes a memory leak and possible system lockup (exploitable against the host OS by a guest OS user, if a SCSI disk is passed through to a virtual machine) due to an out-of-memory condition.
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
References
How CyberStrike helps
Reason, not just scan
It reasons through your app's logic the way a human pentester would, so it finds flaws signature scanners miss.
Learn moreVerified findings
Every finding is proven exploitable before you see it, which cuts the false positives that bury real risk.
Learn moreAI-driven DAST and SAST
Probe running apps and read source from one engine, so issues are caught before and after they ship.
Learn moreOpen source
Read exactly how it tests and what it reports. CyberStrike is open source and in early access.
View the repo
Frequently asked questions
What is CVE-2017-12190?
CVE-2017-12190 is a medium-severity vulnerability. It was published on November 22, 2017 and has a CVSS 3.0 base score of 6.5 (MEDIUM).
How severe is CVE-2017-12190?
This vulnerability has a CVSS 3.0 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2017-12190?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2017-12190?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-12190 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
Related MEDIUM CVEs from 2017
View all- 6.9CVE-2017-10058
Vulnerability in the Oracle Business Intelligence Enterprise Edition component of Oracle Fusion Midd
View details - 6.9CVE-2017-10370
Vulnerability in the Oracle Hospitality Guest Access component of Oracle Hospitality Applications (s
View details - 6.8CVE-2016-8334
A large out-of-bounds read on the heap vulnerability in Foxit PDF Reader can potentially be abused f
View details - 6.8CVE-2016-4484
The Debian initrd script for the cryptsetup package 2:1.7.3-2 and earlier allows physically proximat
View details - 6.8CVE-2016-8318
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Security: Encrypt
View details - 6.8CVE-2016-6034
IBM Tivoli Storage Manager for Virtual Environments (VMware) could disclose the Windows domain crede
View details - 6.8CVE-2017-3812
A vulnerability in the implementation of Common Industrial Protocol (CIP) functionality in Cisco Ind
View details - 6.8CVE-2017-3824
A vulnerability in the handling of list headers in Cisco cBR Series Converged Broadband Routers coul
View details - 6.8CVE-2015-4049
Unisys Libra 43xx, 63xx, and 83xx, and FS600 class systems with MCP-FIRMWARE 40.0 before 40.0IC4 Bui
View details - 6.8CVE-2016-9337
An issue was discovered in Tesla Motors Model S automobile, all firmware versions before version 7.1
View details - 6.8CVE-2016-9345
An issue was discovered in Emerson DeltaV Easy Security Management DeltaV V12.3, DeltaV V12.3.1, and
View details - 6.8CVE-2016-4690
An issue was discovered in certain Apple products. iOS before 10.2 is affected. The issue involves t
View details