CVE-2017-7539

MEDIUM
5.3
CVSS Score
Published: July 26, 2018 at 02:00 PM UTC
Updated: June 17, 2026 at 01:24 AM UTC
4 products affected across 2 vendorsQEMUOpenStackVirtualization

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Severity
MEDIUM5.3
Exploit prediction
EPSS 5%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.10.12.10.1
Affected range stops below 2.10.1, so it looks safe — our inference, not a vendor statement
redhat-enterprise-linux (environment)
All versions

References (12)

Mailing Listx_refsource_MLISTPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2017/07/21/4
VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/99944
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2017:2628
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2017:3466
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2017:3470
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2017:3471
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2017:3472
Vendor Advisoryx_refsource_REDHATThird Party Advisory
https://access.redhat.com/errata/RHSA-2017:3473

CVSS

5.3MEDIUMredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-617CWE-20

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