CVE-2009-4021
UnknownEPSS 0.41%
Last modified
CVE-2009-4021 is a vulnerability of currently unknown severity. The fuse_direct_io function in fs/fuse/file.c in the fuse subsystem in the Linux kernel before 2.6.32-rc7 might allow attackers to cause a denial of service (invalid pointer dereference and OOPS) via vectors possibly related to a memory-consumption attack.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
Description
The fuse_direct_io function in fs/fuse/file.c in the fuse subsystem in the Linux kernel before 2.6.32-rc7 might allow attackers to cause a denial of service (invalid pointer dereference and OOPS) via vectors possibly related to a memory-consumption attack.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | <= 2.6.32 | Rc6 |
| Linux | Linux Kernel | 2.6.0 | — |
| Linux | Linux Kernel | 2.6.1 | — |
| Linux | Linux Kernel | 2.6.2 | — |
| Linux | Linux Kernel | 2.6.3 | — |
| Linux | Linux Kernel | 2.6.4 | — |
| Linux | Linux Kernel | 2.6.5 | — |
| Linux | Linux Kernel | 2.6.6 | — |
| Linux | Linux Kernel | 2.6.7 | — |
| Linux | Linux Kernel | 2.6.8 | — |
| Linux | Linux Kernel | 2.6.8.1 | — |
| Linux | Linux Kernel | 2.6.9 | — |
| Linux | Linux Kernel | 2.6.10 | — |
| Linux | Linux Kernel | 2.6.11 | — |
| Linux | Linux Kernel | 2.6.11.1 | — |
| Linux | Linux Kernel | 2.6.11.2 | — |
| Linux | Linux Kernel | 2.6.11.3 | — |
| Linux | Linux Kernel | 2.6.11.4 | — |
| Linux | Linux Kernel | 2.6.11.5 | — |
| Linux | Linux Kernel | 2.6.11.6 | — |
| Linux | Linux Kernel | 2.6.11.7 | — |
| Linux | Linux Kernel | 2.6.11.8 | — |
| Linux | Linux Kernel | 2.6.11.9 | — |
| Linux | Linux Kernel | 2.6.11.10 | — |
| Linux | Linux Kernel | 2.6.11.11 | — |
| Linux | Linux Kernel | 2.6.11.12 | — |
| Linux | Linux Kernel | 2.6.12 | — |
| Linux | Linux Kernel | 2.6.12.1 | — |
| Linux | Linux Kernel | 2.6.12.2 | — |
| Linux | Linux Kernel | 2.6.12.3 | — |
| Linux | Linux Kernel | 2.6.12.4 | — |
| Linux | Linux Kernel | 2.6.12.5 | — |
| Linux | Linux Kernel | 2.6.12.6 | — |
| Linux | Linux Kernel | 2.6.13 | — |
| Linux | Linux Kernel | 2.6.13.1 | — |
| Linux | Linux Kernel | 2.6.13.2 | — |
| Linux | Linux Kernel | 2.6.13.3 | — |
| Linux | Linux Kernel | 2.6.13.4 | — |
| Linux | Linux Kernel | 2.6.13.5 | — |
| Linux | Linux Kernel | 2.6.14 | — |
| Linux | Linux Kernel | 2.6.14.1 | — |
| Linux | Linux Kernel | 2.6.14.2 | — |
| Linux | Linux Kernel | 2.6.14.3 | — |
| Linux | Linux Kernel | 2.6.14.4 | — |
| Linux | Linux Kernel | 2.6.14.5 | — |
| Linux | Linux Kernel | 2.6.14.6 | — |
| Linux | Linux Kernel | 2.6.14.7 | — |
| Linux | Linux Kernel | 2.6.15 | — |
| Linux | Linux Kernel | 2.6.15.1 | — |
| Linux | Linux Kernel | 2.6.15.2 | — |
Showing 50 of 324 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2009-4021?
The fuse_direct_io function in fs/fuse/file.c in the fuse subsystem in the Linux kernel before 2.6.32-rc7 might allow attackers to cause a denial of service (invalid pointer dereference and OOPS) via vectors possibly related to a memory-consumption attack.
How severe is CVE-2009-4021?
Severity scoring for CVE-2009-4021 is pending analysis. The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.
How do I fix CVE-2009-4021?
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-2009-4021?
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Scan your code nowSource: NVD / NIST