Public Date:
487945: CVE-2009-0748 kernel: ext4: ext4_fill_super() missing validation issue

The MITRE CVE dictionary describes this issue as:

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel 2.6.27 before and 2.6.28 before does not validate the superblock configuration, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) by attempting to mount a crafted ext4 filesystem.

Find out more about CVE-2009-0748 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, and Red Hat Enterprise MRG.

This issue was addressed in Red Hat Enterprise Linux 5 by

CVSS v2 metrics

Base Score 4.9
Base Metrics AV:L/AC:L/Au:N/C:N/I:N/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 5 (kernel) RHSA-2009:1243 2009-09-02
Last Modified

CVE description copyright © 2017, The MITRE Corporation