7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
8.4%
The blk_rq_map_user_iov function in block/blk-map.c in the Linux kernel
before 4.8.14 does not properly restrict the type of iterator, which allows
local users to read or write to arbitrary kernel memory locations or cause
a denial of service (use-after-free) by leveraging access to a /dev/sg
device.
Author | Note |
---|---|
sbeattie | requires access to /dev/sg*, which unprivileged users normally do not have access to. |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1003.12 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-hwe | < 4.8.0-39.42~16.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-hwe-edge | < 4.8.0-39.42~16.04.1 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-lts-xenial | < 4.4.0-62.83~14.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-raspi2 | < 4.4.0-1042.49 | UNKNOWN |
ubuntu | 16.10 | noarch | linux-raspi2 | < 4.8.0-1024.27 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-snapdragon | < 4.4.0-1046.50 | UNKNOWN |
ubuntu | 16.10 | noarch | linux-snapdragon | < 4.4.0-1046.50 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-62.83 | UNKNOWN |
ubuntu | 16.10 | noarch | linux | < 4.8.0-37.39 | UNKNOWN |
www.openwall.com/lists/oss-security/2016/12/08/19
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9576
gist.githubusercontent.com/dvyukov/80cd94b4e4c288f16ee4c787d404118b/raw/10536069562444da51b758bb39655b514ff93b45/gistfile1.txt
github.com/torvalds/linux/commit/86db1e29772372155db08ff48a9ceb76e11a2ad1
launchpad.net/bugs/cve/CVE-2016-9576
marc.info/?l=linux-scsi&m=148010092224801&w=2
nvd.nist.gov/vuln/detail/CVE-2016-9576
security-tracker.debian.org/tracker/CVE-2016-9576
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
8.4%