Vulnerability Monitor

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CVE-2011-4086

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.

Security Impact Summary

CVE-2011-4086 is a security vulnerability that . Impacting 1 product from linux organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2012, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2012-07-03T16:40:31.020

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.9 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

6.9

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	≤ 3.3	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0.1	Yes
Operating System	linux	linux_kernel	3.0.2	Yes
Operating System	linux	linux_kernel	3.0.3	Yes
Operating System	linux	linux_kernel	3.0.4	Yes
Operating System	linux	linux_kernel	3.0.5	Yes
Operating System	linux	linux_kernel	3.0.6	Yes
Operating System	linux	linux_kernel	3.0.7	Yes
Operating System	linux	linux_kernel	3.0.8	Yes
Operating System	linux	linux_kernel	3.0.9	Yes
Operating System	linux	linux_kernel	3.0.10	Yes
Operating System	linux	linux_kernel	3.0.11	Yes
Operating System	linux	linux_kernel	3.0.12	Yes
Operating System	linux	linux_kernel	3.0.13	Yes
Operating System	linux	linux_kernel	3.0.14	Yes
Operating System	linux	linux_kernel	3.0.15	Yes
Operating System	linux	linux_kernel	3.0.16	Yes
Operating System	linux	linux_kernel	3.0.17	Yes
Operating System	linux	linux_kernel	3.0.18	Yes
Operating System	linux	linux_kernel	3.0.19	Yes
Operating System	linux	linux_kernel	3.0.20	Yes
Operating System	linux	linux_kernel	3.0.21	Yes
Operating System	linux	linux_kernel	3.0.22	Yes
Operating System	linux	linux_kernel	3.0.23	Yes
Operating System	linux	linux_kernel	3.0.24	Yes
Operating System	linux	linux_kernel	3.0.25	Yes
Operating System	linux	linux_kernel	3.0.26	Yes
Operating System	linux	linux_kernel	3.0.27	Yes
Operating System	linux	linux_kernel	3.0.28	Yes
Operating System	linux	linux_kernel	3.0.29	Yes
Operating System	linux	linux_kernel	3.0.30	Yes
Operating System	linux	linux_kernel	3.0.31	Yes
Operating System	linux	linux_kernel	3.0.32	Yes
Operating System	linux	linux_kernel	3.0.33	Yes
Operating System	linux	linux_kernel	3.0.34	Yes
Operating System	linux	linux_kernel	3.1	Yes
Operating System	linux	linux_kernel	3.1	Yes
Operating System	linux	linux_kernel	3.1	Yes
Operating System	linux	linux_kernel	3.1	Yes
Operating System	linux	linux_kernel	3.1	Yes
Operating System	linux	linux_kernel	3.1.1	Yes
Operating System	linux	linux_kernel	3.1.2	Yes
Operating System	linux	linux_kernel	3.1.3	Yes
Operating System	linux	linux_kernel	3.1.4	Yes
Operating System	linux	linux_kernel	3.1.5	Yes
Operating System	linux	linux_kernel	3.1.6	Yes
Operating System	linux	linux_kernel	3.1.7	Yes
Operating System	linux	linux_kernel	3.1.8	Yes
Operating System	linux	linux_kernel	3.1.9	Yes
Operating System	linux	linux_kernel	3.1.10	Yes
Operating System	linux	linux_kernel	3.2	Yes
Operating System	linux	linux_kernel	3.2	Yes
Operating System	linux	linux_kernel	3.2	Yes
Operating System	linux	linux_kernel	3.2	Yes
Operating System	linux	linux_kernel	3.2	Yes
Operating System	linux	linux_kernel	3.2	Yes
Operating System	linux	linux_kernel	3.2	Yes
Operating System	linux	linux_kernel	3.2.1	Yes
Operating System	linux	linux_kernel	3.2.2	Yes
Operating System	linux	linux_kernel	3.2.3	Yes
Operating System	linux	linux_kernel	3.2.4	Yes
Operating System	linux	linux_kernel	3.2.5	Yes
Operating System	linux	linux_kernel	3.2.6	Yes
Operating System	linux	linux_kernel	3.2.7	Yes
Operating System	linux	linux_kernel	3.2.8	Yes
Operating System	linux	linux_kernel	3.2.9	Yes
Operating System	linux	linux_kernel	3.2.10	Yes
Operating System	linux	linux_kernel	3.2.11	Yes
Operating System	linux	linux_kernel	3.2.12	Yes
Operating System	linux	linux_kernel	3.2.13	Yes
Operating System	linux	linux_kernel	3.2.14	Yes
Operating System	linux	linux_kernel	3.2.15	Yes
Operating System	linux	linux_kernel	3.2.16	Yes
Operating System	linux	linux_kernel	3.2.17	Yes
Operating System	linux	linux_kernel	3.2.18	Yes
Operating System	linux	linux_kernel	3.2.19	Yes
Operating System	linux	linux_kernel	3.2.20	Yes

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=15291164b22a357cb211b618adfef4fa82fc0de3 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2012-0571.html ([email protected])
http://rhn.redhat.com/errata/RHSA-2012-0670.html ([email protected])
http://secunia.com/advisories/48898 ([email protected])
http://secunia.com/advisories/48964 ([email protected])
http://www.debian.org/security/2012/dsa-2469 ([email protected])
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.1 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=749143 ([email protected])
https://github.com/torvalds/linux/commit/15291164b22a357cb211b618adfef4fa82fc0de3 Patch ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=15291164b22a357cb211b618adfef4fa82fc0de3 (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00013.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2012-0571.html (af854a3a-2127-422b-91ae-364da2661108)
http://rhn.redhat.com/errata/RHSA-2012-0670.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/48898 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/48964 (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2012/dsa-2469 (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.1 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=749143 (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/torvalds/linux/commit/15291164b22a357cb211b618adfef4fa82fc0de3 Patch (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.