CVE-2009-0746
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…
- 4.9MediumCVSS base score
- 0.75%Exploitation in 30 daysEPSS · top 45% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- Linux Kernel 2.6.x - 'make_indexed_dir()' Local Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 32775dos, linuxpublished 16 Feb 2009Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 0.75% · top 45% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.9.
Affected products
n/a
- affected n/a
References
18
- oval:org.mitre.oval:def:8039 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.19 (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-0509 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 37471 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2009:1243 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- linux-kernel-makeindexeddir-ext4-dos(48872) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- DSA-1749 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 52202 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- USN-751-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://bugzilla.kernel.org/show_bug.cgi?id=12430 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20091120 VMSA-2009-0016 VMware vCenter and ESX update release and vMA patch release address multiple security issue in third party components (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 36562 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 34394 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e6b8bc09ba2075cd91fbffefcd2778b1a00bd76f (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.7 (opens in a new tab)x_refsource_CONFIRMx_transferred
- oval:org.mitre.oval:def:10342 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- ADV-2009-3316 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-0746 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-0746)Record last updated .