CVE-2012-2119

Severity: medium (CVSS 5.2 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-01-22 · updated 2026-06-16
Weakness: CWE-119

Description

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.

Affected products

Linux kernel: through 3.4.4; 3.4, 3.4.1, 3.4.2, 3.4.3

References

http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=814278
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b92946e2919134ebe2a4083e4302236295ea2a73
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
http://marc.info/?l=linux-netdev&m=133455718001608&w=2
http://rhn.redhat.com/errata/RHSA-2012-0743.html
http://ubuntu.com/usn/usn-1529-1
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
http://www.openwall.com/lists/oss-security/2012/04/19/14
https://github.com/torvalds/linux/commit/b92946e2919134ebe2a4083e4302236295ea2a73
https://oss.oracle.com/git/?p=redpatch.git%3Ba=commit%3Bh=4aae94d1c7b32316911c86176c0ed4f8ed62da73
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=814278
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b92946e2919134ebe2a4083e4302236295ea2a73

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