kernel: ext4: make_indexed_dir() missing validation
Published Feb 27, 2009
4.9
MEDIUMCVSS 2.0
EPSS 0.75%
Description
The make_indexed_dir function in fs/ext4/namei.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 a certain rec_len field, which allows local users to cause a denial of service (OOPS) by attempting to mount a crafted ext4 filesystem.
Affected products
No data.
- 2.6.27
- 2.6.27.1
- 2.6.27.2
- 2.6.27.3
- 2.6.27.4
- 2.6.27.5
- 2.6.27.6
- 2.6.27.7
- 2.6.27.8
- 2.6.27.9
- 2.6.27.10
- 2.6.27.11
- 2.6.27.12
- 2.6.27.13
- 2.6.27.14
- 2.6.27.15
- 2.6.27.16
- 2.6.27.17
- 2.6.27.18
- 2.6.28
- 2.6.28.1
- 2.6.28.2
- 2.6.28.3
- 2.6.28.4
- 2.6.28.5
- 2.6.28.6
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-164.el5
Fixed · RHSA-2009:1243
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-164.el5 | Fixed | RHSA-2009:1243 |
No package ranges for this CVE.
Remediation
Red Hat statement
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.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.75% (0.00750) | 53.32th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.75% (0.00750) | 49.96th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00176) | 36.77th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 0.34th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 0.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.22% (0.03220) | 84.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.22% (0.03220) | 82.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.22% (0.03220) | 65.30th | v2 (v2022.01.01) |
References (22)
- http://bugzilla.kernel.org/show_bug.cgi?id=12430 x_refsource_CONFIRM
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e6b8bc09ba2075cd91fbffefcd2778b1a00bd76f x_refsource_CONFIRM
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.19 x_refsource_CONFIRM
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.7 x_refsource_CONFIRM
- http://osvdb.org/52202 vdb-entryx_refsource_OSVDB
- http://rhn.redhat.com/errata/RHSA-2009-1243.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/34394 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/36562 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/37471 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2009/dsa-1749 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/archive/1/507985/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.ubuntu.com/usn/usn-751-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html x_refsource_CONFIRM
- http://www.vupen.com/english/advisories/2009/0509 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2009/3316 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2009-0746 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=487935 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/48872 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2009-0746
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10342 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8039 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-0746
Change history (0)
No recorded changes yet.