CVE-2009-4131

Description

The EXT4_IOC_MOVE_EXT (aka move extents) ioctl implementation in the ext4 filesystem in the Linux kernel before 2.6.32-git6 allows local users to overwrite arbitrary files via a crafted request, related to insufficient checks for file permissions.

Category

7.2
CVSS
Severity: High
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory opensuse.org Vendor Advisory mandriva.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory secunia.com Vendor Advisory vupen.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=544471 patch
http://lkml.org/lkml/2009/12/9/255 patch mailing list
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.32-git6.log patch
http://git.kernel.org/?p=linux/kernel/git/tytso/ext4.git%3Ba=commit%3Bh=4a58579b9e4e2a35d57e6c9c8483e52f6f1b7fd6
http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html vendor advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2009:329 vendor advisory
http://www.ubuntu.com/usn/USN-869-1 vendor advisory
http://secunia.com/advisories/37686 third party advisory
http://secunia.com/advisories/37658 third party advisory vendor advisory
http://www.vupen.com/english/advisories/2009/3468 patch vendor advisory vdb entry
http://www.theregister.co.uk/2009/12/11/linux_kernel_bugs_patched/
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00702.html vendor advisory
http://secunia.com/advisories/38017 third party advisory
http://www.securityfocus.com/bid/37277 patch vdb entry

Frequently Asked Questions

What is the severity of CVE-2009-4131?
CVE-2009-4131 has been scored as a high severity vulnerability.
How to fix CVE-2009-4131?
To fix CVE-2009-4131, 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-2009-4131 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2009-4131 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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