CVE-2009-4306 Denial of service in n/a

What is CVE-2009-4306?

CVE-2009-4306 is a medium-severity denial of service vulnerability in Linux kernel, published on 13 Dec 2009. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Unspecified vulnerability in the EXT4_IOC_MOVE_EXT (aka move extents) ioctl implementation in the ext4 filesystem in the Linux kernel 2.6.32-git6 and earlier allows local users to cause a denial of service (filesystem corruption) via unknown vectors, a different vulnerability than CVE-2009-4131.

Which versions are affected by CVE-2009-4306?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2009-4306?

No fix has been published for CVE-2009-4306 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2009-4306 being exploited?

There is no known exploitation of CVE-2009-4306 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-v4mc-9j94-j2cf.