Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2009-0748

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
27/02/2009
Last modified:
09/04/2025

Description

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2.6.28 before 2.6.28.7 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.

Impact

Vector 2.0
AV:L/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 4.90 MEDIUM
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Local
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
4.90
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:2.6.27:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27:rc8:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27:rc9:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.27.5:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools