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CVE-2009-0746

22
FAUCET Score

CVE-2009-0746 is a denial-of-service vulnerability affecting the Linux kernel (versions 2.6.27 prior to 2.6.27.19 and 2.6.28 prior to 2.6.28.7). It allows local users to trigger a system crash (OOPS) by attempting to mount a specially crafted ext4 filesystem due to improper validation of the rec_len field in the make_indexed_dir function. With a CVSS score of 4.9, this vulnerability has a low attack complexity and requires local access, leading to a complete system availability impact. While not actively exploited in the wild, public exploit code exists on ExploitDB, though there is no evidence of broader community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.27CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.27:*:*:*:*:*:*:*
2.6.27.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.27.1:*:*:*:*:*:*:*
2.6.27.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.27.2:*:*:*:*:*:*:*
2.6.27.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.27.3:*:*:*:*:*:*:*
2.6.27.4CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.27.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.9MEDIUM

AV:L/AC:L/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.75%
Probability of exploitation in next 30 days
EPSS Percentile
51.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-32775 · Feb 16, 2009
This CVE's current EPSS score of 0.0075 is in the 85th percentile among its peer group of 3,052 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-164.el5
View patch

Vendor Advisories (1)

redhatCVE-2009-0746Low

kernel: ext4: make_indexed_dir() missing validation

Jan 11, 2009

References

bugzilla.kernel.org / show_bug.cgi
git.kernel.org
kernel.org / pub/linux/kernel/v2.6/ChangeLog-2.6.27.19
kernel.org / pub/linux/kernel/v2.6/ChangeLog-2.6.28.7
osvdb.org / 52202
rhn.redhat.com / errata/RHSA-2009-1243.html
secunia.com / advisories/34394
secunia.com / advisories/36562
secunia.com / advisories/37471
exchange.xforce.ibmcloud.com / vulnerabilities/48872
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10342
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8039
debian.org / security/2009/dsa-1749
securityfocus.com / archive/1/507985/100/0/threaded
ubuntu.com / usn/usn-751-1
vmware.com / security/advisories/VMSA-2009-0016.html
vupen.com / english/advisories/2009/0509
Vendor Advisory
vupen.com / english/advisories/2009/3316