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CVE-2017-12190

CVSS v3.0 6.5 (Medium)
65% Progress
CVSS v2.0 4.9 (Medium)
49% Progress
EPSS 0.06 % (28th)
0.06% Progress
Affected Products 1
Advisories 25
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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.

Weaknesses
CWE-400
Uncontrolled Resource Consumption
CWE-772
Missing Release of Resource after Effective Lifetime
CVE Status
PUBLISHED
CNA
Red Hat, Inc.
Published Date
2017-11-22 18:29:00
(6 years ago)
Updated Date
2023-02-12 23:27:30
(19 months ago)

Affected Products

Linux

Configuration #1

    CPE23 From Up To
  Linux Kernel 4.13.7 and prior versions cpe:2.3:o:linux:linux_kernel <= 4.13.7