CVE-2015-6815

CVE-2015-6815 is a low-severity vulnerability in Redhat Openstack with a CVSS 3.x base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-835.

Key facts

• Severity: Low (CVSS 3.x base score 3.5)
• CVSS v2: 2.7
• EPSS exploit prediction: 1% (58th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-835
• Affected product: Redhat Openstack
• Published: 2020-01-31
• Last modified: 2026-06-17

Description

The process_tx_desc function in hw/net/e1000.c in QEMU before 2.4.0.1 does not properly process transmit descriptor data when sending a network packet, which allows attackers to cause a denial of service (infinite loop and guest crash) via unspecified vectors.

Frequently asked questions

What is CVE-2015-6815?

The process_tx_desc function in hw/net/e1000.c in QEMU before 2.4.0.1 does not properly process transmit descriptor data when sending a network packet, which allows attackers to cause a denial of service (infinite loop and guest crash) via unspecified vectors.

How severe is CVE-2015-6815?

CVE-2015-6815 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2015-6815 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6815?

CVE-2015-6815 primarily affects Redhat Openstack. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-6815?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-6815 published?

CVE-2015-6815 was published on 2020-01-31 and last updated on 2026-06-17.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168077.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168646.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-October/168671.html
• http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00026.html
• http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00005.html
• http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00011.html
• http://www.openwall.com/lists/oss-security/2015/09/04/4
• http://www.openwall.com/lists/oss-security/2015/09/05/5
• http://www.ubuntu.com/usn/USN-2745-1
• https://bugzilla.redhat.com/show_bug.cgi?id=1260076
• https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg01199.html
• https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg05832.html
• https://www.arista.com/en/support/advisories-notices/security-advisories/1188-security-advisory-14

Affected products (30)

• cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
• cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:11.0:sp3:*:*:*:*:*:*
• cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:11.0:sp4:*:*:*:*:*:*
• cpe:2.3:a:novell:suse_linux_enterprise_software_development_kit:12.0:*:*:*:*:*:*:*
• cpe:2.3:o:novell:suse_linux_enterprise_debuginfo:11.0:sp3:*:*:*:*:*:*
• cpe:2.3:o:novell:suse_linux_enterprise_debuginfo:11.0:sp4:*:*:*:*:*:*
• cpe:2.3:o:novell:suse_linux_enterprise_desktop:11.0:sp3:*:*:*:*:*:*
• cpe:2.3:o:novell:suse_linux_enterprise_desktop:11.0:sp4:*:*:*:*:*:*
• cpe:2.3:o:novell:suse_linux_enterprise_desktop:12.0:*:*:*:*:*:*:*
• cpe:2.3:o:novell:suse_linux_enterprise_server:11.0:sp3:*:*:*:*:*:*
• cpe:2.3:o:novell:suse_linux_enterprise_server:11.0:sp4:*:*:*:*:*:*
• cpe:2.3:o:novell:suse_linux_enterprise_server:12.0:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:openstack:5.0:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
• cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:*
• cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*
• cpe:2.3:o:arista:eos:4.12:*:*:*:*:*:*:*
• cpe:2.3:o:arista:eos:4.13:*:*:*:*:*:*:*
• cpe:2.3:o:arista:eos:4.14:*:*:*:*:*:*:*
• cpe:2.3:o:arista:eos:4.15:*:*:*:*:*:*:*

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