4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
28.1%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 17.10 | noarch | linux | < 4.13.0-17.20 | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < 3.13.0-142.191 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-116.140 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1014.14 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1052.61 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < 4.13.0-1005.7 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-gcp | < 4.13.0-1002.5 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-hwe | < 4.13.0-26.29~16.04.2 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-hwe-edge | < 4.18.0-8.9~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-hwe-edge | < 4.13.0-26.29~16.04.2 | UNKNOWN |
bugzilla.redhat.com/show_bug.cgi?id=1495089
bugzilla.suse.com/show_bug.cgi?id=1062568
launchpad.net/bugs/cve/CVE-2017-12190
marc.info/?t=150605752800001&r=1&w=2
nvd.nist.gov/vuln/detail/CVE-2017-12190
security-tracker.debian.org/tracker/CVE-2017-12190
ubuntu.com/security/notices/USN-3487-1
ubuntu.com/security/notices/USN-3582-1
ubuntu.com/security/notices/USN-3582-2
ubuntu.com/security/notices/USN-3583-1
ubuntu.com/security/notices/USN-3583-2
www.cve.org/CVERecord?id=CVE-2017-12190
www.mail-archive.com/[email protected]/msg1495884.html
www.mail-archive.com/[email protected]/msg1495887.html
4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
28.1%