CVE-2017-9524: debian debian_linux Improper Input Validation
Vulnerability summary
CVE-2017-9524 is a high (CVSS 7.5) Improper Input Validation vulnerability in debian debian_linux. EPSS estimates a 4.09% chance of exploitation in the next 30 days, higher than 90.7% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 4% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Related 2Timeline
- 06-07-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all initialization occurs before talking to a client in the nbd_negotiate function.
CVSS metrics
4 scores · 3 sources · 3 versions- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
4.09%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
No change 0.00 pp
From 4.09% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat10 products
- qemu-img< 10:1.5.3-126.el7_3.10
- qemu-img-rhev< 10:2.6.0-28.el7_3.12
- qemu-kvm< 10:1.5.3-126.el7_3.10
- qemu-kvm-common< 10:1.5.3-126.el7_3.10
- qemu-kvm-common-rhev< 10:2.6.0-28.el7_3.12
Debian2 products
- qemu< 1:2.8+dfsg-7
- debian_linuxEOL9.0
Qemu1 product
- qemu≤ 2.9.1
3 vendors · 13 products
References
17 links- access.redhat.com/errata/RHSA-2017:1681Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
- www.openwall.com/lists/oss-security/2017/06/12/1Mailing ListX Refsource MLISTPatchThird Party Advisory
- access.redhat.com/errata/RHSA-2017:1682Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
- lists.gnu.org/archive/html/qemu-devel/2017-05/msg06240.htmlMailing ListX Refsource MLISTPatchThird Party Advisory
- lists.gnu.org/archive/html/qemu-devel/2017-06/msg02321.htmlMailing ListX Refsource MLISTPatchThird Party Advisory
