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Fencer Intel
medium 6.0

CVE-2015-7549 json

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 (N…

published 2017-10-30 9 y ago modified 2026-06-17 4 mo ago also EUVD-2015-7463

cvss
6.0
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

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.

Patch / fix

  • qemu qemu 2.5.0
  • qemu Debian 14, Debian 13, Debian 12 1:2.5+dfsg-1

debian advisories DEBIAN-CVE-2015-7549

  • qemu Ubuntu 14.04 LTS 2.0.0+dfsg-2ubuntu1.22

ubuntu advisories UBUNTU-CVE-2015-7549

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kvm SLES for SAP 11 SP4, SLES 11 SP4 1.4.2-44.1
  • qemu SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 2.3.1-14.1
  • kvm SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS 1.4.2-46.1
  • qemu SLES for SAP 12, SLES 12, SLED 12 2.0.2-48.19.1
  • xen SLES for SAP 12, SLES 12, SLED 12 +1 more 4.4.4_02-22.19.1
  • xen SLES for SAP 11 SP4, SLES 11 SP4, SLED 11 SP4 +1 more 4.4.4_02-32.1
  • xen SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 4.5.2_06-7.1

suse advisories SUSE-SU-2016:1785-1SUSE-SU-2016:1703-1SUSE-SU-2016:1698-1SUSE-SU-2016:1560-1SUSE-SU-2016:1318-1SUSE-SU-2016:0955-1

  • xen openSUSE Tumbleweed 4.7.0_12-1.3

opensuse advisories openSUSE-SU-2024:10196-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-7549 updated cvss 2.3

Qemu: pci: null pointer dereference issue

  • Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-kvm-tools, libcacard-tools, qemu-kvm-common, +1 more Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) qemu-kvm-rhev Red Hat Enterprise Linux OpenStack Platform 6 (Juno) qemu-kvm-rhev Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) qemu-img-rhev, qemu-kvm-rhev, libcacard-rhev, qemu-kvm-tools-rhev, libcacard-devel-rhev, libcacard-tools-rhev, +1 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 5 kvm, xen Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 6.0 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.