CVE-2015-7549: qemu NULL Pointer Dereference
Vulnerability summary
CVE-2015-7549 is a medium (CVSS 6.0) NULL Pointer Dereference vulnerability in qemu. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 33.4% of scored vulnerabilities.
Not severe (CVSS 6, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 9Timeline
- 30-10-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
The MSI-X MMIO support in hw/pci/msix.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by leveraging failure to define the .write method.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.0MediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.0MediumCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
EPSS trend
Probability
0.39%
Chance of exploitation in the next 30 days
Percentile
33%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.39% 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: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- qemu< 1:2.5+dfsg-1
Qemu1 product
- qemu< 2.5.0
Ubuntu1 product
- qemu< 2.0.0+dfsg-2ubuntu1.22
3 vendors · 3 products
References
11 links- www.openwall.com/lists/oss-security/2015/12/14/2Mailing ListX Refsource MLISTIssue TrackingThird Party AdvisoryREPORT
www.debian.org/security/2016/dsa-3471Vendor AdvisoryX Refsource DEBIANIssue TrackingThird Party Advisory- git.qemu.org?p=qemu.git%3Ba=commit%3Bh=43b11a91dd861a946b231b89b754285X Refsource CONFIRM
- security.gentoo.org/glsa/201602-01Vendor AdvisoryX Refsource GENTOOIssue TrackingThird Party Advisory
- lists.fedoraproject.org/pipermail/package-announce/2016-January/175380.htmlVendor AdvisoryX Refsource FEDORAIssue TrackingThird Party Advisory