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).
Published 2009-12-13 01:30:00
Updated 2017-09-19 01:29:57
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Denial of service

Threat overview for CVE-2009-4307

Top countries where our scanners detected CVE-2009-4307
Top open port discovered on systems with this issue 52869
IPs affected by CVE-2009-4307 240,836
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2009-4307!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2009-4307

Probability of exploitation activity in the next 30 days: 2.91%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 90 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2009-4307

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
7.1
HIGH AV:N/AC:M/Au:N/C:N/I:N/A:C
8.6
6.9
nvd@nist.gov

CWE ids for CVE-2009-4307

  • Assigned by: nvd@nist.gov (Primary)

Vendor statements for CVE-2009-4307

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