CVSS2
Attack Vector
LOCAL
Attack 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
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
AI Score
Confidence
High
EPSS
Percentile
10.1%
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.
Vendor | Product | Version | CPE |
---|---|---|---|
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a0ac402cfcdc904f9772e1762b3fda112dcc56a0
lists.opensuse.org/opensuse-security-announce/2016-12/msg00040.html
lists.opensuse.org/opensuse-security-announce/2016-12/msg00041.html
lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html
lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html
lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html
lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html
lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html
lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html
lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.html
rhn.redhat.com/errata/RHSA-2017-0817.html
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
www.openwall.com/lists/oss-security/2016/12/08/19
www.securityfocus.com/bid/94821
access.redhat.com/errata/RHSA-2017:1842
access.redhat.com/errata/RHSA-2017:2077
access.redhat.com/errata/RHSA-2017:2669
bugzilla.redhat.com/show_bug.cgi?id=1403145
github.com/torvalds/linux/commit/a0ac402cfcdc904f9772e1762b3fda112dcc56a0
CVSS2
Attack Vector
LOCAL
Attack 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
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
AI Score
Confidence
High
EPSS
Percentile
10.1%