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CVE-2009-4307

UnknownEPSS 3.43%

Last modified

CVE-2009-4307 is a vulnerability of currently unknown severity. The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).. EPSS estimates a 3.43% chance of exploitation in the next 30 days.

Description

The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).

Metrics

EPSS Probability
3.43%

87.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel<= 2.6.32
LinuxLinux Kernel2.6.0
LinuxLinux Kernel2.6.1
LinuxLinux Kernel2.6.2
LinuxLinux Kernel2.6.3
LinuxLinux Kernel2.6.4
LinuxLinux Kernel2.6.5
LinuxLinux Kernel2.6.6
LinuxLinux Kernel2.6.7
LinuxLinux Kernel2.6.8
LinuxLinux Kernel2.6.8.1
LinuxLinux Kernel2.6.9
LinuxLinux Kernel2.6.10
LinuxLinux Kernel2.6.11
LinuxLinux Kernel2.6.11.1
LinuxLinux Kernel2.6.11.2
LinuxLinux Kernel2.6.11.3
LinuxLinux Kernel2.6.11.4
LinuxLinux Kernel2.6.11.5
LinuxLinux Kernel2.6.11.6
LinuxLinux Kernel2.6.11.7
LinuxLinux Kernel2.6.11.8
LinuxLinux Kernel2.6.11.9
LinuxLinux Kernel2.6.11.10
LinuxLinux Kernel2.6.11.11
LinuxLinux Kernel2.6.11.12
LinuxLinux Kernel2.6.12
LinuxLinux Kernel2.6.12.1
LinuxLinux Kernel2.6.12.2
LinuxLinux Kernel2.6.12.3
LinuxLinux Kernel2.6.12.4
LinuxLinux Kernel2.6.12.5
LinuxLinux Kernel2.6.12.6
LinuxLinux Kernel2.6.13
LinuxLinux Kernel2.6.13.1
LinuxLinux Kernel2.6.13.2
LinuxLinux Kernel2.6.13.3
LinuxLinux Kernel2.6.13.4
LinuxLinux Kernel2.6.13.5
LinuxLinux Kernel2.6.14
LinuxLinux Kernel2.6.14.1
LinuxLinux Kernel2.6.14.2
LinuxLinux Kernel2.6.14.3
LinuxLinux Kernel2.6.14.4
LinuxLinux Kernel2.6.14.5
LinuxLinux Kernel2.6.14.6
LinuxLinux Kernel2.6.14.7
LinuxLinux Kernel2.6.15
LinuxLinux Kernel2.6.15.1
LinuxLinux Kernel2.6.15.2

Showing 50 of 323 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-4307?
The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows user-assisted remote attackers to cause a denial of service (divide-by-zero error and panic) via a malformed ext4 filesystem containing a super block with a large FLEX_BG group size (aka s_log_groups_per_flex value).
How severe is CVE-2009-4307?
Severity scoring for CVE-2009-4307 is pending analysis. The EPSS model estimates a 3.43% probability of exploitation in the next 30 days.
How do I fix CVE-2009-4307?
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.

Are you affected by CVE-2009-4307?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST