kernel: macvtap: zerocopy: vector length is not validated before pinning user pages
Published Jan 22, 2013
5.2
MEDIUMCVSS 2.0
EPSS 0.71%
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
No data.
- ≤ 3.4.4
- 3.4
- 3.4.1
- 3.4.2
- 3.4.3
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-220.23.1.el6
Fixed · RHSA-2012:0743
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-220.23.1.el6 | Fixed | RHSA-2012:0743 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:A/AC:M/Au:S/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.71% (0.00713) | 51.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.71% (0.00713) | 48.62th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.24% (0.00244) | 45.74th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.30% (0.00300) | 70.33th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.21% (0.00211) | 59.21th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00211) | 57.19th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.54% (0.01537) | 74.00th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.69% (0.02686) | 82.44th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (14)
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=814278 x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b92946e2919134ebe2a4083e4302236295ea2a73 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html vendor-advisoryx_refsource_SUSE
- http://marc.info/?l=linux-netdev&m=133455718001608&w=2 mailing-listx_refsource_MLIST
- http://rhn.redhat.com/errata/RHSA-2012-0743.html vendor-advisoryx_refsource_REDHAT
- http://ubuntu.com/usn/usn-1529-1 vendor-advisoryx_refsource_UBUNTU
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2012/04/19/14 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2012-2119 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=814278 Issue Tracking
- https://github.com/torvalds/linux/commit/b92946e2919134ebe2a4083e4302236295ea2a73 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2012-2119
- https://oss.oracle.com/git/?p=redpatch.git%3Ba=commit%3Bh=4aae94d1c7b32316911c86176c0ed4f8ed62da73 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2012-2119
Change history (0)
No recorded changes yet.