The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the…
Priority LOW 25Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
The net subsystem in the Linux kernel before 3.1 does not properly restrict use of the IFF_TX_SKB_SHARING flag, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability to access /proc/net/pktgen/pgctrl, and then using the pktgen package in conjunction with a bridge device for a VLAN interface.
Why it matters now
EPSS 0.00468 40th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
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 · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | before 3.1 | Vulnerable | Linux |
| cpe:2.3:o:avaya:9608_firmware:*:*:*:*:*:*:*:* | 6.0 – 6.6.0 | Vulnerable | Avaya |
| cpe:2.3:h:avaya:9608:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Avaya |
| cpe:2.3:o:avaya:9608g_firmware:*:*:*:*:*:*:*:* | 6.0 – 6.6.0 | Vulnerable | Avaya |
| cpe:2.3:h:avaya:9608g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Avaya |
| cpe:2.3:o:avaya:9611g_firmware:*:*:*:*:*:*:*:* | 6.0 – 6.6.0 | Vulnerable | Avaya |
| cpe:2.3:h:avaya:9611g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Avaya |
| cpe:2.3:o:avaya:9621g_firmware:*:*:*:*:*:*:*:* | 6.0 – 6.6.0 | Vulnerable | Avaya |
| cpe:2.3:h:avaya:9621g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Avaya |
| cpe:2.3:o:avaya:9641g_firmware:*:*:*:*:*:*:*:* | 6.0 – 6.6.0 | Vulnerable | Avaya |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 3.1 Vulnerable ·Linux
- cpe:2.3:o:avaya:9608_firmware:*:*:*:*:*:*:*:* Versions 6.0 – 6.6.0 Vulnerable ·Avaya
- cpe:2.3:h:avaya:9608:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Avaya
- cpe:2.3:o:avaya:9608g_firmware:*:*:*:*:*:*:*:* Versions 6.0 – 6.6.0 Vulnerable ·Avaya
- cpe:2.3:h:avaya:9608g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Avaya
- cpe:2.3:o:avaya:9611g_firmware:*:*:*:*:*:*:*:* Versions 6.0 – 6.6.0 Vulnerable ·Avaya
- cpe:2.3:h:avaya:9611g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Avaya
- cpe:2.3:o:avaya:9621g_firmware:*:*:*:*:*:*:*:* Versions 6.0 – 6.6.0 Vulnerable ·Avaya
- cpe:2.3:h:avaya:9621g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Avaya
- cpe:2.3:o:avaya:9641g_firmware:*:*:*:*:*:*:*:* Versions 6.0 – 6.6.0 Vulnerable ·Avaya
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Not affected: 3 products
- Red Hat Enterprise Linux 5
- Red Hat Enterprise Linux 6
- Red Hat Enterprise MRG 2
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4112
- 2026-10-03 Alias added: GHSA-xhfj-c879-xq4w
References
Patch 3
Sources
- CVE-2011-4112 · CVE Program
- CVE-2011-4112 · NVD
- FIRST EPSS
- GHSA-xhfj-c879-xq4w · GitHub Advisory Database · CC BY 4.0
- CVE-2011-4112 · 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