What is CVE-2011-4086?

CVE-2011-4086 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10, classified as a Buffer Overflow flaw (CWE-119). CVE-2011-4086 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2011-4086?

CVE-2011-4086 has a CVSS score of 4.9 out of 10, rated Medium severity. The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2011-4086?

No patch is currently available for CVE-2011-4086. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2011-4086 actively exploited?

CVE-2011-4086 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/119.html

CVE-2011-4086

Medium

The journal_unmap_buffer function in fs/jbd2/transaction.c in the Linux kernel before 3.3.1 does not properly handle the _Delay and _Unwritten buffer head states, which allows local users to cause a denial of service (system crash) by leveraging the presence of an ext4 filesystem that was mounted with a journal.

Package Linux Kernel

Published 2012-07-03

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.9

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

Vector string

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

Weakness type

CWE-119

CVE-2011-4086 is a Buffer Overflow vulnerability

What is Buffer Overflow?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2011-4086 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lists
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html
Lists
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html
Red Hat
http://rhn.redhat.com/errata/RHSA-2012-0571.html
Red Hat
http://rhn.redhat.com/errata/RHSA-2012-0670.html
Secunia
http://secunia.com/advisories/48898
Secunia
http://secunia.com/advisories/48964
Debian Security
http://www.debian.org/security/2012/dsa-2469
Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.1
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=749143
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=15291164b22a357cb211b618adfef4fa82fc0de3
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/15291164b22a357cb211b618adfef4fa82fc0de3
Patch

Details

CVE ID CVE-2011-4086

Severity Medium

CVSS score 4.9 / 10

CVSS version 2.0

Published 2012-07-03

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2011-4086?

CVE-2011-4086 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 , classified as a Buffer Overflow flaw (CWE-119) . CVE-2011-4086 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2011-4086?

CVE-2011-4086 has a CVSS score of 4.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2011-4086?

No patch is currently available for CVE-2011-4086. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2011-4086 actively exploited?

No — CVE-2011-4086 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Buffer Overflow (CWE-119)?

The product performs operations on a memory buffer but reads or writes outside its intended boundaries. View CWE-119 on MITRE CWE →