CVE-2009-4307
The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows...
7.1 High
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).
Exploit likelihood
3.43%Up 1.5 points since Feb 4, 2022
What each source reports
NVD Score used
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).
- Record
CVE-2009-4307- CVSS 2.0
- 7.1 High
AV:N/AC:M/Au:N/C:N/I:N/A:C - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE List No score
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).
- Record
CVE-2009-4307- Updated
- 2026-11-02
EUVDEUVD-2009-4275 No score
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).
- Record
EUVD-2009-4275- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w39x-wg96-vcgw No score
The ext4_fill_flex_info function in fs/ext4/super.c in the Linux kernel before 2.6.32-git6 allows...
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).
- Record
GHSA-w39x-wg96-vcgw- Updated
- 2026-11-02
OSVBELL-CVE-2009-4307
CVE-2009-4307 does not affect BellSoft software
- Record
BELL-CVE-2009-4307- CVSS 2.0
- 7.1 High
AV:N/AC:M/Au:N/C:N/I:N/A:C - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
linux-2.6Debian:6.0 From an advisory covering 7 CVEs |
before 2.6.32-41squeeze2, plus listed versions 2.6.32-302.6.32-30+m68k.52.6.32-312.6.32-31~bpo50+12.6.32-32 Show 14 moreShow less2.6.32-332.6.32-342.6.32-34squeeze12.6.32-352.6.32-35squeeze12.6.32-35squeeze22.6.32-35~bpo50+12.6.32-362.6.32-372.6.32-382.6.32-392.6.32-39squeeze12.6.32-402.6.32-41 |
2.6.32-41squeeze2 |
kernelRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-PAERed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-PAE-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-PAE-develRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debugRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debug-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debug-develRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debuginfo-commonRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
Show 39 moreShow less
| Package | Affected | Fixed |
|---|---|---|
kernel-develRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-docRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-xenRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-xen-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-xen-develRed Hat:enterprise_linux:5::client From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernelRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-PAERed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-PAE-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-PAE-develRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debugRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debug-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debug-develRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-debuginfo-commonRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-develRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-docRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-kdumpRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-kdump-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-kdump-develRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-xenRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-xen-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernel-xen-develRed Hat:enterprise_linux:5::server From an advisory covering 4 CVEs |
before 0:2.6.18-194.el5 | 0:2.6.18-194.el5 |
kernelRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-PAERed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-PAE-debuginfoRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-PAE-develRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-debugRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-debug-debuginfoRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-debug-develRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-debuginfoRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-debuginfo-commonRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-develRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-docRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-kdumpRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-kdump-debuginfoRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-kdump-develRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-xenRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-xen-debuginfoRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
kernel-xen-develRed Hat:rhel_eus:5.4 From an advisory covering 4 CVEs |
before 0:2.6.18-164.17.1.el5 | 0:2.6.18-164.17.1.el5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-4307 is a high vulnerability (CVSS 7.1) in Linux Kernel, published December 13, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.43%, the 89th percentile. No source names a fixed version.
References
secunia.com/advisories/38276
git.kernel.org?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=503358ae01b70ce6909d19dd01287093f6b6271c
lkml.org/lkml/2009/12/9/255
redhat.com/support/errata/RHSA-2010-0380.html
kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9874
Show 194 moreShow less
lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
bugzilla.kernel.org/show_bug.cgi?id=14287
mandriva.com/security/advisories?name=MDVSA-2011:029
nvd.nist.gov/vuln/detail/CVE-2009-4307
github.com/advisories/GHSA-w39x-wg96-vcgw
docs.bell-sw.com/security/cves/CVE-2009-4307
access.redhat.com/errata/RHSA-2010:0178
bugzilla.redhat.com/show_bug.cgi?id=512361
security.access.redhat.com/data/csaf/v2/advisories/2010/rhsa-2010_0178.json
cve.org/CVERecord?id=CVE-2009-4027
This page doesn't list everything
Left out here: 103 references. The JSON record has them.