CVE-2009-0746

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.

Category

4.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.17%
Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory vupen.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8039 vdb entry signature
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.19
http://www.vupen.com/english/advisories/2009/0509 vdb entry vendor advisory
http://secunia.com/advisories/37471 third party advisory
http://rhn.redhat.com/errata/RHSA-2009-1243.html vendor advisory
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/48872 vdb entry
http://www.debian.org/security/2009/dsa-1749 vendor advisory
http://osvdb.org/52202 vdb entry
http://www.ubuntu.com/usn/usn-751-1 vendor advisory
http://bugzilla.kernel.org/show_bug.cgi?id=12430
http://www.securityfocus.com/archive/1/507985/100/0/threaded mailing list
http://secunia.com/advisories/36562 third party advisory
http://secunia.com/advisories/34394 third party advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e6b8bc09ba2075cd91fbffefcd2778b1a00bd76f
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.7
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10342 vdb entry signature
http://www.vupen.com/english/advisories/2009/3316 vdb entry

Frequently Asked Questions

What is the severity of CVE-2009-0746?
CVE-2009-0746 has been scored as a medium severity vulnerability.
How to fix CVE-2009-0746?
To fix CVE-2009-0746, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-0746 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2009-0746 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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