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CVE-2016-4439
The esp_reg_write function in hw/scsi/esp.c in the 53C9X Fast SCSI Controller (FSC) support in QEMU does not properly check command buffer…
Medium6.7EPSS 0.46%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
The esp_reg_write function in hw/scsi/esp.c in the 53C9X Fast SCSI Controller (FSC) support in QEMU does not properly check command buffer length, which allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the QEMU host via unspecified vectors.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.46% · top 60% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.7.
Weakness
Affected products
n/a
- affected n/a
References (8)
- USN-3047-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 90760 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- GLSA-201609-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- USN-3047-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [qemu-devel] 20160519 [PATCH 1/2] scsi: check command buffer length before write(CVE-2016-4439) (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20160519 CVE-2016-4439 Qemu: scsi: esp: OOB write while writing to 's->cmdbuf' in esp_reg_write (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20181130 [SECURITY] [DLA 1599-1] qemu security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1337502 (opens in a new tab)x_refsource_CONFIRMx_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)
- 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://trackcve.app/cve/CVE-2016-4439)Record last updated .