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Fencer Intel
medium 6.5

CVE-2015-5745 json

Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial o…

published 2020-01-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2015-5691

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.

Patch / fix

  • qemu qemu 2.4.0
  • qemu Debian 14, Debian 13, Debian 12 1:2.4+dfsg-1a

debian advisories DEBIAN-CVE-2015-5745

  • qemu Ubuntu 14.04 LTS 2.0.0+dfsg-2ubuntu1.17

ubuntu advisories UBUNTU-CVE-2015-5745

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

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

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-2015-5745 updated cvss 3.2

kernel: qemu buffer overflow in virtio-serial

  • Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32 Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-kvm-rhev, qemu-kvm-tools, libcacard-tools, +2 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 OpenStack Platform 4 qemu-kvm-rhev
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 5 kvm
    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

3.01% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • openwall.com http://www.openwall.com/lists/oss-security/2015/08/06/5 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected products

  • QEMU QEMU

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

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.