CVE-2016-9576

CVSS V2 High 7.2 CVSS V3 High 7.8
Description
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.
Overview
  • CVE ID
  • CVE-2016-9576
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2016-12-28T07:59:00
  • Last Modified Date
  • 2023-02-12T23:27:16
Weakness Enumerations
CWE URL
CWE-416 http://cwe.mitre.org/data/definitions/416.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 4.8.13
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.2
  • Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a0ac402cfcdc904f9772e1762b3fda112dcc56a0 Patch Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00040.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00041.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00057.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00062.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00072.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00075.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00081.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00088.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00091.html Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0817.html Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14 Release Notes Vendor Advisory
http://www.openwall.com/lists/oss-security/2016/12/08/19 Mailing List Patch Third Party Advisory
http://www.securityfocus.com/bid/94821 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:0817
https://access.redhat.com/errata/RHSA-2017:1842 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2077 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2669 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2016-9576
https://bugzilla.redhat.com/show_bug.cgi?id=1403145 Issue Tracking Third Party Advisory
https://github.com/torvalds/linux/commit/a0ac402cfcdc904f9772e1762b3fda112dcc56a0 Patch Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2016-9576
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9576
History
Created Old Value New Value Data Type Notes
2022-05-10 18:51:49 Added to TrackCVE
2022-12-02 12:36:06 2016-12-28T07:59Z 2016-12-28T07:59:00 CVE Published Date updated
2022-12-02 12:36:06 2018-01-05T02:31:22 CVE Modified Date updated
2022-12-02 12:36:06 Modified Vulnerability Status updated
2023-01-12 05:06:09 Modified Undergoing Analysis Vulnerability Status updated
2023-01-17 22:07:32 2023-01-17T21:05:29 CVE Modified Date updated
2023-01-17 22:07:32 Undergoing Analysis Analyzed Vulnerability Status updated
2023-02-02 23:05:46 2023-02-02T21:17:29 CVE Modified Date updated
2023-02-02 23:05:47 Analyzed Modified Vulnerability Status updated
2023-02-02 23:05:47 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. It was found that the blk_rq_map_user_iov() function in the Linux kernel's block device implementation did not properly restrict the type of iterator, which could allow a local attacker to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging write access to a /dev/sg device. Description updated
2023-02-02 23:05:51 References updated
2023-02-13 01:06:56 2023-02-12T23:27:16 CVE Modified Date updated
2023-02-13 01:06:57 It was found that the blk_rq_map_user_iov() function in the Linux kernel's block device implementation did not properly restrict the type of iterator, which could allow a local attacker to read or write to arbitrary kernel memory locations or cause a denial of service (use-after-free) by leveraging write access to a /dev/sg device. 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. Description updated