CVE-2017-12190

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Source
https://nvd.nist.gov/vuln/detail/CVE-2017-12190
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-12190.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2017-12190
Downstream
Related
Published
2017-11-22T18:29:00Z
Modified
2025-08-09T19:01:28Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

The biomapuseriov and biounmapuser 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 bioaddpcpage 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.

References

Affected packages