CVE-2011-3638

Description

fs/ext4/extents.c in the Linux kernel before 3.0 does not mark a modified extent as dirty in certain cases of extent splitting, which allows local users to cause a denial of service (system crash) via vectors involving ext4 umount and mount operations.

4.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 0.15%

Third-Party Advisory openwall.com Third-Party Advisory redhat.com Third-Party Advisory github.com

Affected: n/a n/a

References

Link	Tags
https://github.com/torvalds/linux/commit/667eff35a1f56fa74ce98a0c7c29a40adc1ba4e3	third party advisory patch
http://www.openwall.com/lists/oss-security/2011/10/24/2	third party advisory mailing list
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=667eff35a1f56fa74ce98a0c7c29a40adc1ba4e3
http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0	broken link
https://bugzilla.redhat.com/show_bug.cgi?id=747942	issue tracking third party advisory

Frequently Asked Questions

What is the severity of CVE-2011-3638?: CVE-2011-3638 has been scored as a medium severity vulnerability.
How to fix CVE-2011-3638?: To fix CVE-2011-3638, 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-2011-3638 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2011-3638 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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