Kernel: netlink socket crash (null pointer deref) in netlink_dump function
Priority LOW 34CWE-476Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- High · High · 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-476.
Summary
A NULL pointer dereference vulnerability was found in netlink_dump. This issue can occur when the Netlink socket receives the message(sendmsg) for the XFRM_MSG_GETSA, XFRM_MSG_GETPOLICY type message, and the DUMP flag is set and can cause a denial of service or possibly another unspecified impact. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.003 22nd percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 6 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | Not affected | CNA |
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — Not affected CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.15 to before 3.16.39; 3.17 to before 4.4.223; 4.5 to before 4.7.10 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.8:rc1:*:*:*:*:*:* | 4.8 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.8:rc2:*:*:*:*:*:* | 4.8 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.8:rc3:*:*:*:*:*:* | 4.8 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.8:rc4:*:*:*:*:*:* | 4.8 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.8:rc5:*:*:*:*:*:* | 4.8 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:4.8:rc6:*:*:*:*:*:* | 4.8 rc6 | Vulnerable | Linux |
| cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | 38 | Vulnerable | Fedoraproject |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.15 to before 3.16.39; 3.17 to before 4.4.223; 4.5 to before 4.7.10 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.8:rc1:*:*:*:*:*:* Versions 4.8 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.8:rc2:*:*:*:*:*:* Versions 4.8 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.8:rc3:*:*:*:*:*:* Versions 4.8 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.8:rc4:*:*:*:*:*:* Versions 4.8 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.8:rc5:*:*:*:*:*:* Versions 4.8 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:4.8:rc6:*:*:*:*:*:* Versions 4.8 rc6 Vulnerable ·Linux
- cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2023-3106
- 2026-10-03 Alias added: GHSA-f28c-5rx3-m73f
References
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Sources
- CVE-2023-3106 · CVE Program
- CVE-2023-3106 · NVD
- FIRST EPSS
- GHSA-f28c-5rx3-m73f · GitHub Advisory Database · CC BY 4.0
- CVE-2023-3106 · 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