The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick…
Priority LOW 21CWE-120Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-120 and the CVSS impact.
Summary
The net_tx_pkt_do_sw_fragmentation function in hw/net/net_tx_pkt.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the current fragment length.
Why it matters now
EPSS 0.00414 35th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* | up to 2.6.2 | Vulnerable | QEMU |
| cpe:2.3:a:qemu:qemu:2.7.0:rc0:*:*:*:*:*:* | 2.7.0 rc0 | Vulnerable | QEMU |
| cpe:2.3:a:qemu:qemu:2.7.0:rc1:*:*:*:*:*:* | 2.7.0 rc1 | Vulnerable | QEMU |
| cpe:2.3:a:qemu:qemu:2.7.0:rc2:*:*:*:*:*:* | 2.7.0 rc2 | Vulnerable | QEMU |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* Versions up to 2.6.2 Vulnerable ·QEMU
- cpe:2.3:a:qemu:qemu:2.7.0:rc0:*:*:*:*:*:* Versions 2.7.0 rc0 Vulnerable ·QEMU
- cpe:2.3:a:qemu:qemu:2.7.0:rc1:*:*:*:*:*:* Versions 2.7.0 rc1 Vulnerable ·QEMU
- cpe:2.3:a:qemu:qemu:2.7.0:rc2:*:*:*:*:*:* Versions 2.7.0 rc2 Vulnerable ·QEMU
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 8 (Liberty) | Affected | No fix planned: Will not fix |
Not affected: 2 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2016-6834
- 2026-10-03 Alias added: GHSA-7mrf-3fph-7jw4
References
Advisory 4
Sources
- CVE-2016-6834 · CVE Program
- CVE-2016-6834 · NVD
- FIRST EPSS
- GHSA-7mrf-3fph-7jw4 · GitHub Advisory Database · CC BY 4.0
- CVE-2016-6834 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences