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Fencer Intel
medium 5.2

CVE-2012-2119 json

Buffer overflow in the macvtap device driver in the Linux kernel before 3.4.5, when running in certain configurations, allows privileged KV…

published 13y ago modified 4mo ago also EUVD-2012-2121

cvss
5.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

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.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 3.2.20-1

debian advisories DEBIAN-CVE-2012-2119

  • kernel RHEL 6 2.6.32-220.23.1.el6
  • perf RHEL 6 2.6.32-220.23.1.el6
  • python-perf RHEL 6 2.6.32-220.23.1.el6
  • kernel-kdump RHEL 6 2.6.32-220.23.1.el6
  • kernel-firmware RHEL 6 2.6.32-220.23.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-220.23.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-220.23.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-220.23.1.el6

red hat advisories RHSA-2012:0743

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-2119 updated cvss 5.2

kernel: macvtap: zerocopy: vector length is not validated before pinning user pages

  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-220.23.1.el6, kernel 2.6.32-220.23.1.el6, kernel-firmware 2.6.32-220.23.1.el6, kernel-debuginfo-common-i686 2.6.32-220.23.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.23.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-220.23.1.el6, python-perf 2.6.32-220.23.1.el6, kernel-debuginfo-common-i686 2.6.32-220.23.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.23.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-220.23.1.el6, kernel 2.6.32-220.23.1.el6, kernel-firmware 2.6.32-220.23.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.23.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-220.23.1.el6, python-perf 2.6.32-220.23.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.23.1.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-220.23.1.el6, kernel 2.6.32-220.23.1.el6, kernel-kdump 2.6.32-220.23.1.el6, kernel-firmware 2.6.32-220.23.1.el6, kernel-bootwrapper 2.6.32-220.23.1.el6, kernel-debuginfo-common-i686 2.6.32-220.23.1.el6, +3 more Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-220.23.1.el6, python-perf 2.6.32-220.23.1.el6, kernel-debuginfo-common-i686 2.6.32-220.23.1.el6, kernel-debuginfo-common-ppc64 2.6.32-220.23.1.el6, kernel-debuginfo-common-s390x 2.6.32-220.23.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.23.1.el6
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-220.23.1.el6, kernel 2.6.32-220.23.1.el6, kernel-firmware 2.6.32-220.23.1.el6, kernel-debuginfo-common-i686 2.6.32-220.23.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.23.1.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-220.23.1.el6, python-perf 2.6.32-220.23.1.el6, kernel-debuginfo-common-i686 2.6.32-220.23.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.23.1.el6
    fixed: vendor fix RHSA-2012:0743
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.2 AV:A/AC:M/Au:S/C:N/I:N/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.