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.
CVE-2012-2119
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 5.2 — v2 rates that MEDIUM (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:A/AC:M/Au:S/C:N/I:N/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 0.7% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v2.0 (legacy)
- 5.2MEDIUMNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 5.2(low)
- EG Risk
- 28(Track)EG Risk 28/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity52% × 45%Exploitation1% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 51%
- KEV
- Not listed
Published
January 22, 2013
Last Modified
April 29, 2026
References (20)
- secalert@redhathttp://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=814278
- secalert@redhathttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b92946e2919134ebe2a4083e4302236295ea2a73
- secalert@redhathttp://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
- secalert@redhathttp://marc.info/?l=linux-netdev&m=133455718001608&w=2
- secalert@redhathttp://rhn.redhat.com/errata/RHSA-2012-0743.html
- secalert@redhathttp://ubuntu.com/usn/usn-1529-1
- secalert@redhathttp://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
- secalert@redhathttp://www.openwall.com/lists/oss-security/2012/04/19/14
- secalert@redhathttps://github.com/torvalds/linux/commit/b92946e2919134ebe2a4083e4302236295ea2a73
- secalert@redhathttps://oss.oracle.com/git/?p=redpatch.git%3Ba=commit%3Bh=4aae94d1c7b32316911c86176c0ed4f8ed62da73
- af854a3a-2127-422b-91ae-364da2661108http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=814278
- af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b92946e2919134ebe2a4083e4302236295ea2a73
- af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
- af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=linux-netdev&m=133455718001608&w=2
- af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2012-0743.html
Vendor Advisories for CVE-2012-2119(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(3)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | linux-image-3.2.0-29-powerpc-smp (3.2.0-29.46) @ precise | 2026-05-29 | ubuntu |
| ubuntu | linux-image-3.2.0-1417-omap4 (3.2.0-1417.23) @ precise | 2026-05-29 | ubuntu |
| redhat | kernel-0:2.6.32-220.23.1.el6 | 2012-06-18 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(4 across 4 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | — | 3.2.20-1 | — |
Debian:12(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | — | 3.2.20-1 | — |
Debian:13(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | — | 3.2.20-1 | — |
Debian:14(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linux | — | 3.2.20-1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(2)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 4× in last 7d / 17× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 127 total refreshes for this CVE.
- 2026-08-21 23:43 UTCEPSS rescore
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- 2026-07-26 13:45 UTCEG score recompute▲ 5.20
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Frequently asked(4)
What is CVE-2012-2119?
When was CVE-2012-2119 disclosed?
Is CVE-2012-2119 actively exploited?
How do I remediate CVE-2012-2119?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2012-2119
Is Your Infrastructure Affected by CVE-2012-2119?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.