CVE-2016-9793

The sock_setsockopt function in net/core/sock.c in the Linux kernel before 4.8.14 mishandles negative values of sk_sndbuf and sk_rcvbuf, which allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact by leveraging the CAP_NET_ADMIN capability for a crafted setsockopt system call with the (1) SO_SNDBUFFORCE or (2) SO_RCVBUFFORCE option.

CVSS v3.0 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/torvalds/linux/commit/b98b0bc8c431e3ceb4b26b0dfc8db509518fb290	Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1402013	Issue Tracking
http://www.openwall.com/lists/oss-security/2016/12/03/1	Mailing List Patch
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14	Release Notes
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b98b0bc8c431e3ceb4b26b0dfc8db509518fb290	Patch Vendor Advisory
http://www.securityfocus.com/bid/94655
https://source.android.com/security/bulletin/2017-03-01.html
http://www.securitytracker.com/id/1037968
https://github.com/xairy/kernel-exploits/tree/master/CVE-2016-9793
https://access.redhat.com/errata/RHSA-2017:0933
https://access.redhat.com/errata/RHSA-2017:0932
https://access.redhat.com/errata/RHSA-2017:0931

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Information

Published : 2016-12-28 07:59

Updated : 2018-01-05 02:31

NVD link : CVE-2016-9793

Mitre link : CVE-2016-9793

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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