CVE-2012-2136

Public Exploit

Description

The sock_alloc_send_pskb function in net/core/sock.c in the Linux kernel before 3.4.5 does not properly validate a certain length value, which allows local users to cause a denial of service (heap-based buffer overflow and system crash) or possibly gain privileges by leveraging access to a TUN/TAP device.

Category

7.2
CVSS
Severity: High
CVSS 2.0 •
EPSS 0.08%
Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5 vendor advisory
http://rhn.redhat.com/errata/RHSA-2012-0743.html vdb entry third party advisory vendor advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc broken link
http://www.securityfocus.com/bid/53721 vdb entry third party advisory
https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc patch exploit
http://www.ubuntu.com/usn/USN-1535-1 third party advisory vendor advisory
http://ubuntu.com/usn/usn-1529-1 third party advisory vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=816289 issue tracking
http://rhn.redhat.com/errata/RHSA-2012-1087.html third party advisory vendor advisory
http://secunia.com/advisories/50807 third party advisory url repurposed

Frequently Asked Questions

What is the severity of CVE-2012-2136?
CVE-2012-2136 has been scored as a high severity vulnerability.
How to fix CVE-2012-2136?
To fix CVE-2012-2136, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-2136 being actively exploited in the wild?
It is possible that CVE-2012-2136 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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