Vulnerability Monitor

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CVE-2012-2136

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.

Published

2012-08-09T10:29:46.870

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.2 (HIGH)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 3.0.37	Yes
Operating System	linux	linux_kernel	< 3.2.23	Yes
Operating System	linux	linux_kernel	< 3.4.5	Yes

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc Broken Link ([email protected])
http://rhn.redhat.com/errata/RHSA-2012-0743.html Third Party Advisory, VDB Entry ([email protected])
http://rhn.redhat.com/errata/RHSA-2012-1087.html Third Party Advisory ([email protected])
http://secunia.com/advisories/50807 URL Repurposed ([email protected])
http://ubuntu.com/usn/usn-1529-1 Third Party Advisory ([email protected])
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5 Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/53721 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-1535-1 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=816289 Issue Tracking ([email protected])
https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc Exploit, Patch ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2012-0743.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2012-1087.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/50807 URL Repurposed (af854a3a-2127-422b-91ae-364da2661108)
http://ubuntu.com/usn/usn-1529-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/53721 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-1535-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=816289 Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc Exploit, Patch (af854a3a-2127-422b-91ae-364da2661108)