CVE-2016-9793

 

Published at: - 28-12-2016 08:59

Last modified: - 17-01-2023 10:05

Total changes: - 4

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://github.com/torvalds/linux/commit/b98b0bc8c431e3ceb4b26b0dfc8db509518fb290
• https://bugzilla.redhat.com/show_bug.cgi?id=1402013
• [oss-security] 20161202 Re: CVE Request: Linux: signed overflows for SO_{SND|RCV}BUFFORCE-Mailing List, Patch, Third Party Advisory
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.14
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b98b0bc8c431e3ceb4b26b0dfc8db509518fb290
• 94655-Third Party Advisory, VDB Entry
• https://source.android.com/security/bulletin/2017-03-01.html
• 1037968-Third Party Advisory, VDB Entry
• https://github.com/xairy/kernel-exploits/tree/master/CVE-2016-9793
• RHSA-2017:0933-Third Party Advisory
• RHSA-2017:0932-Third Party Advisory
• RHSA-2017:0931-Third Party Advisory

 

Keywords

NVD

 

CVE-2016-9793

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures