CVE-2016-2070
HIGHCVSS 7.5/10EPSS 3.32%
Last modified
CVE-2016-2070 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The tcp_cwnd_reduction function in net/ipv4/tcp_input.c in the Linux kernel before 4.3.5 allows remote attackers to cause a denial of service (divide-by-zero error and system crash) via crafted TCP traffic.. EPSS estimates a 3.32% chance of exploitation in the next 30 days.
Description
The tcp_cwnd_reduction function in net/ipv4/tcp_input.c in the Linux kernel before 4.3.5 allows remote attackers to cause a denial of service (divide-by-zero error and system crash) via crafted TCP traffic.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.3, < 4.3.5 |
References
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1302219Issue Tracking
- https://github.com/torvalds/linux/commit/8b8a321ff72c785ed5e8b4cf6eda20b35d427390Patch, Vendor Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.5Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1302219Issue Tracking
- https://github.com/torvalds/linux/commit/8b8a321ff72c785ed5e8b4cf6eda20b35d427390Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2016-2070?
The tcp_cwnd_reduction function in net/ipv4/tcp_input.c in the Linux kernel before 4.3.5 allows remote attackers to cause a denial of service (divide-by-zero error and system crash) via crafted TCP traffic.
How severe is CVE-2016-2070?
CVE-2016-2070 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.32% probability of exploitation in the next 30 days.
How do I fix CVE-2016-2070?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2016-2070?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST