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CVE-2009-0748

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2...

4.9 Medium

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.

Exploit likelihood

0.51%Down 1.0 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.9

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.

Record
CVE-2009-0748
CVSS 2.0
4.9 MediumAV:L/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2009-0748
Updated
2026-11-02
EUVDEUVD-2009-0748 No score

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.

Record
EUVD-2009-0748
Updated
2026-11-03
GitHub AdvisoriesGHSA-fgjp-243p-6367 No score

The ext4_fill_super function in fs/ext4/super.c in the Linux kernel 2.6.27 before 2.6.27.19 and 2...

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.

Record
GHSA-fgjp-243p-6367
Weakness
CWE-20
Updated
2026-11-02
OSVBELL-CVE-2009-0748 4.9

CVE-2009-0748 does not affect BellSoft software

Record
BELL-CVE-2009-0748
CVSS 2.0
4.9 MediumAV:L/AC:L/Au:N/C:N/I:N/A:C
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
linux-2.6
Debian:5.0
From an advisory covering 11 CVEs
 before 2.6.26-13lenny2, plus listed versions
2.6.26-132.6.26-13lenny2~bpo40+1
2.6.26-13lenny2
kernel
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-PAE
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debug
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
Show 24 moreShow less
Affected packages
PackageAffectedFixed
kernel-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-doc
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-headers
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-xen
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-PAE
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debug
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-doc
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-headers
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-kdump
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-kdump-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-kdump-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-xen
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 6 CVEs
 before 0:2.6.18-164.el5
0:2.6.18-164.el5

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-0748 is a medium vulnerability (CVSS 4.9) in Linux Kernel, published February 27, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. No source names a fixed version.

References

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Left out here: 202 references. The JSON record has them.

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