CVE-2017-15119
The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of service issue.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.
- CVSS 3.0
- 8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 3.28% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- qemu/qemu · redhat/virtualization · canonical/ubuntu linux · debian/debian linux
- Source
- secalert@redhat.com
EPSS 3.3% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.openwall.com/lists/oss-security/2017/11/28/9Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/102011Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1104Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1113Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15119Issue Tracking, Patch, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05044.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3575-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4213Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/11/28/9Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/102011Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:1104Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1113Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-15119Issue Tracking, Patch, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05044.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3575-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4213Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.