CVE-2012-6704: Integer Overflow
First published: Thu Apr 26 2012(Updated: )
A flaw was found in the Linux kernel's implementation of setsockopt for the SO_{SND|RCV}BUF setsockopt() system call. Users with non-namespace CAP_NET_ADMIN are able to trigger this call and create a situation in which the sockets sendbuff data size could be negative.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <3.5 | 3.5 |
| Linux kernel | <3.2.85 | |
| Linux kernel | >=3.3<3.5 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2012-6704 https://nvd.nist.gov/vuln/detail/CVE-2012-6704
- https://bugzilla.redhat.com/show_bug.cgi?id=1402024
- https://access.redhat.com/security/cve/CVE-2012-6704
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=82981930125abfd39d7c8378a9cfdf5e1be2002b
- http://www.openwall.com/lists/oss-security/2016/12/03/1
- http://www.securityfocus.com/bid/95135
- https://github.com/torvalds/linux/commit/82981930125abfd39d7c8378a9cfdf5e1be2002b
- https://access.redhat.com/security/cve/CVE-2016-9793
- http://seclists.org/oss-sec/2016/q4/574
Frequently Asked Questions
What is the severity of CVE-2012-6704?
CVE-2012-6704 has been classified as a high severity vulnerability due to its potential impact on networking functions.
How do I fix CVE-2012-6704?
To fix CVE-2012-6704, upgrade the Linux kernel to version 3.5 or later.
What systems are affected by CVE-2012-6704?
CVE-2012-6704 affects Linux kernel versions prior to 3.5 and between versions 3.3 and 3.5.
Can CVE-2012-6704 be exploited remotely?
CVE-2012-6704 can potentially be exploited by users with non-namespace CAP_NET_ADMIN permissions, impacting socket buffer sizes.
What does CVE-2012-6704 affect in the Linux kernel?
CVE-2012-6704 affects the setsockopt system call, specifically the SO_SND_BUF and SO_RCV_BUF options in the Linux kernel.
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