CVE-2009-4307

kernel: ext4: avoid divide by zero when trying to mount a corrupted file system

Published Dec 13, 2009 CVSS 2.0 · 7.1 High EPSS 3.4% KEV · Not listed
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).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-2443-1 linux-2.6 security update
EUVD EUVD EUVD-2009-4275 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).
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 7, 2024, 7:01 AM
Reserved
Dec 12, 2009, 12:00 AM
Status
Modified
Published
Dec 13, 2009, 1:30 AM
Modified
Jun 16, 2026, 11:13 PM
Severity
Low
Public date
Nov 23, 2009, 12:00 AM