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CVE-2012-2119
Buffer overflow in the macvtap device driver in the Linux kernel before 3.4.5, when running in certain configurations, allows privileged…
- 5.2MediumCVSS base score
- 0.71%Exploitation in 30 daysEPSS · top 46% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
- 10 months later
· 10 months later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.2 | AV:A/AC:M/Au:S/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 0.71% · top 46% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.2.
Affected products
n/a
- affected n/a
References
10
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2012:0743 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://github.com/torvalds/linux/commit/b92946e2919134ebe2a4083e4302236295ea2a73 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b92946e2919134ebe2a4083e4302236295ea2a73 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=814278 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [linux-netdev] 20120416 [PATCH 3/6] macvtap: zerocopy: validate vector length before pinning user pages (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- USN-1529-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- openSUSE-SU-2013:0925 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://oss.oracle.com/git/?p=redpatch.git%3Ba=commit%3Bh=4aae94d1c7b32316911c86176c0ed4f8ed62da73 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20120419 Re: CVE request -- kernel: macvtap: zerocopy: vector length is not validated before pinning user pages (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2012-2121 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-2119)Record last updated .