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Fencer Intel
high 8.8

CVE-2015-7504 json

Heap-based buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU allows guest OS administrators to cause a denial of serv…

published 9y ago modified 4mo ago also EUVD-2015-7425

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

Heap-based buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU allows guest OS administrators to cause a denial of service (instance crash) or possibly execute arbitrary code via a series of packets in loopback mode.

Patch / fix

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

debian advisories DEBIAN-CVE-2015-7504

  • xen Ubuntu 14.04 LTS 4.4.2-0ubuntu0.14.04.4
  • qemu Ubuntu 14.04 LTS 2.0.0+dfsg-2ubuntu1.21

ubuntu advisories UBUNTU-CVE-2015-7504

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 11 SP4, SLES 11 SP4, SLED 11 SP4 +1 more 4.4.3_06-29.1
  • xen SLES for SAP 12, SLES 12, SLED 12 +1 more 4.4.3_06-22.15.1
  • xen SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 4.5.2_02-4.1
  • xen SLES for SAP 11 SP3, SLES 11 SP3-TERADATA, SLES 11 SP3 +2 more 4.2.5_18-21.1
  • xen SLES 11 SP2-LTSS 4.1.6_08-23.1

suse advisories SUSE-SU-2015:2338-1SUSE-SU-2015:2328-1SUSE-SU-2015:2324-1SUSE-SU-2015:2326-1SUSE-SU-2015:2306-1

  • xen openSUSE Tumbleweed 4.7.0_12-1.3

opensuse advisories openSUSE-SU-2024:10196-1

Is CVE-2015-7504 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.

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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-2015-7504 updated cvss 6.5

Qemu: net: pcnet: heap overflow vulnerability in pcnet_receive

  • Red Hat Enterprise Linux 5 kvm, xen
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Virtualization 3 rhev-hypervisor
    affected: no fix available
  • 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

0.64% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/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.