CVE-2021-47495
MEDIUMCVSS 5.5/10EPSS 0.21%
Last modified
CVE-2021-47495 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: usbnet: sanity check for maxpacket maxpacket of 0 makes no sense and oopses as we need to divide by it. Give up. V2: fixed typo in log and stylistic issues. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: usbnet: sanity check for maxpacket maxpacket of 0 makes no sense and oopses as we need to divide by it. Give up. V2: fixed typo in log and stylistic issues
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | < 4.4.291 | — |
| Linux | Linux Kernel | >= 4.5, < 4.9.289 | — |
| Linux | Linux Kernel | >= 4.10, < 4.14.254 | — |
| Linux | Linux Kernel | >= 4.15, < 4.19.215 | — |
| Linux | Linux Kernel | >= 4.20, < 5.4.157 | — |
| Linux | Linux Kernel | >= 5.5, < 5.10.77 | — |
| Linux | Linux Kernel | >= 5.11, < 5.14.16 | — |
| Linux | Linux Kernel | 5.15 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2021-47495?
In the Linux kernel, the following vulnerability has been resolved:
usbnet: sanity check for maxpacket
maxpacket of 0 makes no sense and oopses as we need to divide
by it. Give up.
V2: fixed typo in log and stylistic issues
How severe is CVE-2021-47495?
CVE-2021-47495 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2021-47495?
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-2021-47495?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST