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Last updated: 10/25/2014 8:33:56 PM

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Vulnerability Summary for CVE-2012-2119

Original release date: 01/22/2013
Last revised: 06/20/2013
Source: US-CERT/NIST

Overview

Buffer overflow in the macvtap device driver in the Linux kernel before 3.4.5, when running in certain configurations, allows privileged KVM guest users to cause a denial of service (crash) via a long descriptor with a long vector length.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.2 (MEDIUM) (AV:A/AC:M/Au:S/C:N/I:N/A:C) (legend)
Impact Subscore: 6.9
Exploitability Subscore: 4.4
CVSS Version 2 Metrics:
Access Vector: Local network exploitable
Access Complexity: Medium
Authentication: Required to exploit
Impact Type: Allows disruption of service

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External Source: MLIST
Name: [linux-netdev] 20120416 [PATCH 3/6] macvtap: zerocopy: validate vector length before pinning user pages
External Source: REDHAT
Name: RHSA-2012:0743
External Source: CONFIRM
Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b92946e2919134ebe2a4083e4302236295ea2a73
Type: Patch Information
External Source: CONFIRM
Name: https://github.com/torvalds/linux/commit/b92946e2919134ebe2a4083e4302236295ea2a73
External Source: MLIST
Name: [oss-security] 20120419 Re: CVE request -- kernel: macvtap: zerocopy: vector length is not validated before pinning user pages
External Source: CONFIRM
Name: http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
External Source: CONFIRM
Name: https://oss.oracle.com/git/?p=redpatch.git;a=commit;h=4aae94d1c7b32316911c86176c0ed4f8ed62da73
External Source: CONFIRM
Name: http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=814278
External Source: SUSE
Name: openSUSE-SU-2013:0925
External Source: UBUNTU
Name: USN-1529-1

Technical Details

Vulnerability Type (View All)