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Fencer Intel
critical 9.0

CVE-2015-7512 json

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to caus…

published 10y ago modified 4mo ago also EUVD-2015-7433

cvss
9.0
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.7%
EPSS 7.7% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

Buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU, when a guest NIC has a larger MTU, allows remote attackers to cause a denial of service (guest OS crash) or execute arbitrary code via a large packet.

Patch / fix

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

debian advisories DEBIAN-CVE-2015-7512

  • qemu Ubuntu 14.04 LTS 2.0.0+dfsg-2ubuntu1.21

ubuntu advisories UBUNTU-CVE-2015-7512

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

  • qemu-kvm-rhev RHEL 6, openstack 5 2:0.12.1.2-2.479.el6_7.3
  • qemu-img-rhev RHEL 6, openstack 5 2:0.12.1.2-2.479.el6_7.3
  • qemu-kvm-rhev-tools RHEL 6, openstack 5 2:0.12.1.2-2.479.el6_7.3
  • qemu-kvm RHEL 6 2:0.12.1.2-2.479.el6_7.3
  • qemu-img RHEL 6 2:0.12.1.2-2.479.el6_7.3
  • qemu-kvm-tools RHEL 6 2:0.12.1.2-2.479.el6_7.3
  • qemu-guest-agent RHEL 6 2:0.12.1.2-2.479.el6_7.3

red hat advisories RHSA-2015:2696RHSA-2015:2695RHSA-2015:2694

  • 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
  • qemu SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 2.3.1-7.7
  • kvm SLES for SAP 11 SP3, SLES 11 SP3-TERADATA, SLES 11 SP3 +1 more 1.4.2-37.1
  • qemu SLES for SAP 12, SLES 12, SLED 12 2.0.2-48.12.1
  • kvm SLES for SAP 11 SP4, SLES 11 SP4, SLED 11 SP4 1.4.2-35.1
  • xen SLES 11 SP3-LTSS 4.2.5_20-24.9

suse advisories SUSE-SU-2016:1745-1SUSE-SU-2016:1318-1SUSE-SU-2016:1154-1SUSE-SU-2016:0955-1SUSE-SU-2016:0873-1SUSE-SU-2016:0459-1

  • xen openSUSE Tumbleweed 4.7.0_12-1.3

opensuse advisories openSUSE-SU-2024:10196-1

Is CVE-2015-7512 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

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-2015-7512 updated cvss 7.6

Qemu: net: pcnet: buffer overflow in non-loopback mode

  • Red Hat Enterprise Linux 5 kvm, xen
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Desktop (v. 6) qemu-img 0.12.1.2-2.479.el6_7.3, qemu-kvm 0.12.1.2-2.479.el6_7.3, qemu-kvm-tools 0.12.1.2-2.479.el6_7.3, qemu-guest-agent 0.12.1.2-2.479.el6_7.3 Red Hat Enterprise Linux HPC Node (v. 6) qemu-img 0.12.1.2-2.479.el6_7.3, qemu-kvm 0.12.1.2-2.479.el6_7.3, qemu-kvm-tools 0.12.1.2-2.479.el6_7.3, qemu-guest-agent 0.12.1.2-2.479.el6_7.3
    fixed: vendor fix RHSA-2015:2694
  • Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 qemu-img-rhev 0.12.1.2-2.479.el6_7.3, qemu-kvm-rhev 0.12.1.2-2.479.el6_7.3, qemu-kvm-rhev-tools 0.12.1.2-2.479.el6_7.3
    fixed: vendor fix RHSA-2015:2695
  • Red Hat Enterprise Linux Server (v. 6) qemu-img 0.12.1.2-2.479.el6_7.3, qemu-kvm 0.12.1.2-2.479.el6_7.3, qemu-kvm-tools 0.12.1.2-2.479.el6_7.3, qemu-guest-agent 0.12.1.2-2.479.el6_7.3 Red Hat Enterprise Linux Workstation (v. 6) qemu-img 0.12.1.2-2.479.el6_7.3, qemu-kvm 0.12.1.2-2.479.el6_7.3, qemu-kvm-tools 0.12.1.2-2.479.el6_7.3, qemu-guest-agent 0.12.1.2-2.479.el6_7.3
    fixed: vendor fix RHSA-2015:2694
  • Red Hat RHEV Agents (vdsm) qemu-img-rhev 0.12.1.2-2.479.el6_7.3, qemu-kvm-rhev 0.12.1.2-2.479.el6_7.3, qemu-kvm-rhev-tools 0.12.1.2-2.479.el6_7.3
    fixed: vendor fix RHSA-2015:2696
  • 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 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 Red Hat OpenStack Platform 8 (Liberty) qemu-img-rhev, qemu-kvm-rhev, libcacard-rhev, qemu-kvm-tools-rhev, libcacard-devel-rhev, libcacard-tools-rhev, +1 more
    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

7.73% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

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.