CVE-2017-7539
An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device (NBD) server's initial connection negotiation,…
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device (NBD) server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service.
Timeline
ID reserved
By redhat
- 16 months later
· 16 months later
Published
- 6 years later
· 6 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 |
|---|---|---|---|
| redhatCNA (assigner) | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 5.5% · top 7.2% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
References (12)
- RHSA-2017:2628 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=2b0bbc4f8809c972bad134bc1a2570dbb01dea0b (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2017:3473 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:3470 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:3472 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:3474 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2017:3471 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=ff82911cd3f69f028f2537825c9720ff78bc3f19 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20170721 CVE-2017-7539 Qemu: qemu-nbd crashes due to undefined I/O coroutine (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2017:3466 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7539 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 99944 (opens in a new tab)vdb-entryx_refsource_BIDx_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-2017-16552 (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-2017-7539)Record last updated .