What is CVE-2011-3638?

CVE-2011-3638 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.0 out of 10. CVE-2011-3638 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-3638?

CVE-2011-3638 has a CVSS score of 4.0 out of 10, rated Medium severity. The vector string is AV:L/AC:H/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2011-3638?

No patch is currently available for CVE-2011-3638. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-3638 actively exploited?

CVE-2011-3638 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2011-3638

Medium

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.

Package Linux Kernel

Published 2013-03-01

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.0

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

User Interaction

Scope

Confidentiality

High

Integrity

None

Availability

Vector string

AV:L/AC:H/Au:N/C:N/I:N/A:C

References

The following references provide additional information about CVE-2011-3638 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Ftp
http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0

Broken Link
Openwall
http://www.openwall.com/lists/oss-security/2011/10/24/2

Mailing List Third Party Advisory
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=747942

Issue Tracking Third Party Advisory
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=667eff35a1f56fa74ce98a0c7c29a40adc1ba4e3
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/667eff35a1f56fa74ce98a0c7c29a40adc1ba4e3
Patch

Details

CVE ID CVE-2011-3638

Severity Medium

CVSS score 4.0 / 10

CVSS version 2.0

Published 2013-03-01

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-3638?

CVE-2011-3638 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.0 out of 10 . CVE-2011-3638 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-3638?

CVE-2011-3638 has a CVSS score of 4.0 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:H/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2011-3638?

No patch is currently available for CVE-2011-3638. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-3638 actively exploited?

No — CVE-2011-3638 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.