Vulnerability Monitor

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CVE-2009-4141

Use-after-free vulnerability in the fasync_helper function in fs/fcntl.c in the Linux kernel before 2.6.33-rc4-git1 allows local users to gain privileges via vectors that include enabling O_ASYNC (aka FASYNC or FIOASYNC) on a locked file, and then closing this file.

Security Impact Summary

CVE-2009-4141 is a security vulnerability that . Impacting 1 product from linux organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2010, 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

2010-01-19T16:30:00.930

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.2 (HIGH)

CVSSv2 Vector

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

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

Exploitability Score

3.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-399

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	≤ 2.6.33	Yes
Operating System	linux	linux_kernel	2.6.0	Yes
Operating System	linux	linux_kernel	2.6.1	Yes
Operating System	linux	linux_kernel	2.6.2	Yes
Operating System	linux	linux_kernel	2.6.3	Yes
Operating System	linux	linux_kernel	2.6.4	Yes
Operating System	linux	linux_kernel	2.6.5	Yes
Operating System	linux	linux_kernel	2.6.6	Yes
Operating System	linux	linux_kernel	2.6.7	Yes
Operating System	linux	linux_kernel	2.6.8	Yes
Operating System	linux	linux_kernel	2.6.8.1	Yes
Operating System	linux	linux_kernel	2.6.9	Yes
Operating System	linux	linux_kernel	2.6.10	Yes
Operating System	linux	linux_kernel	2.6.11	Yes
Operating System	linux	linux_kernel	2.6.11.1	Yes
Operating System	linux	linux_kernel	2.6.11.2	Yes
Operating System	linux	linux_kernel	2.6.11.3	Yes
Operating System	linux	linux_kernel	2.6.11.4	Yes
Operating System	linux	linux_kernel	2.6.11.5	Yes
Operating System	linux	linux_kernel	2.6.11.6	Yes
Operating System	linux	linux_kernel	2.6.11.7	Yes
Operating System	linux	linux_kernel	2.6.11.8	Yes
Operating System	linux	linux_kernel	2.6.11.9	Yes
Operating System	linux	linux_kernel	2.6.11.10	Yes
Operating System	linux	linux_kernel	2.6.11.11	Yes
Operating System	linux	linux_kernel	2.6.11.12	Yes
Operating System	linux	linux_kernel	2.6.12	Yes
Operating System	linux	linux_kernel	2.6.12.1	Yes
Operating System	linux	linux_kernel	2.6.12.2	Yes
Operating System	linux	linux_kernel	2.6.12.3	Yes
Operating System	linux	linux_kernel	2.6.12.4	Yes
Operating System	linux	linux_kernel	2.6.12.5	Yes
Operating System	linux	linux_kernel	2.6.12.6	Yes
Operating System	linux	linux_kernel	2.6.13	Yes
Operating System	linux	linux_kernel	2.6.13.1	Yes
Operating System	linux	linux_kernel	2.6.13.2	Yes
Operating System	linux	linux_kernel	2.6.13.3	Yes
Operating System	linux	linux_kernel	2.6.13.4	Yes
Operating System	linux	linux_kernel	2.6.13.5	Yes
Operating System	linux	linux_kernel	2.6.14	Yes
Operating System	linux	linux_kernel	2.6.14.1	Yes
Operating System	linux	linux_kernel	2.6.14.3	Yes
Operating System	linux	linux_kernel	2.6.14.4	Yes
Operating System	linux	linux_kernel	2.6.14.5	Yes
Operating System	linux	linux_kernel	2.6.14.6	Yes
Operating System	linux	linux_kernel	2.6.14.7	Yes
Operating System	linux	linux_kernel	2.6.15	Yes
Operating System	linux	linux_kernel	2.6.15.1	Yes
Operating System	linux	linux_kernel	2.6.15.2	Yes
Operating System	linux	linux_kernel	2.6.15.3	Yes
Operating System	linux	linux_kernel	2.6.15.4	Yes
Operating System	linux	linux_kernel	2.6.15.5	Yes
Operating System	linux	linux_kernel	2.6.15.6	Yes
Operating System	linux	linux_kernel	2.6.15.7	Yes
Operating System	linux	linux_kernel	2.6.16	Yes
Operating System	linux	linux_kernel	2.6.16.1	Yes
Operating System	linux	linux_kernel	2.6.16.2	Yes
Operating System	linux	linux_kernel	2.6.16.3	Yes
Operating System	linux	linux_kernel	2.6.16.4	Yes
Operating System	linux	linux_kernel	2.6.16.5	Yes
Operating System	linux	linux_kernel	2.6.16.6	Yes
Operating System	linux	linux_kernel	2.6.16.7	Yes
Operating System	linux	linux_kernel	2.6.16.8	Yes
Operating System	linux	linux_kernel	2.6.16.9	Yes
Operating System	linux	linux_kernel	2.6.16.10	Yes
Operating System	linux	linux_kernel	2.6.16.11	Yes
Operating System	linux	linux_kernel	2.6.16.12	Yes
Operating System	linux	linux_kernel	2.6.16.13	Yes
Operating System	linux	linux_kernel	2.6.16.14	Yes
Operating System	linux	linux_kernel	2.6.16.15	Yes
Operating System	linux	linux_kernel	2.6.16.16	Yes
Operating System	linux	linux_kernel	2.6.16.17	Yes
Operating System	linux	linux_kernel	2.6.16.18	Yes
Operating System	linux	linux_kernel	2.6.16.19	Yes
Operating System	linux	linux_kernel	2.6.16.20	Yes
Operating System	linux	linux_kernel	2.6.16.21	Yes
Operating System	linux	linux_kernel	2.6.16.22	Yes
Operating System	linux	linux_kernel	2.6.16.23	Yes
Operating System	linux	linux_kernel	2.6.16.24	Yes
Operating System	linux	linux_kernel	2.6.16.25	Yes
Operating System	linux	linux_kernel	2.6.16.26	Yes
Operating System	linux	linux_kernel	2.6.16.27	Yes
Operating System	linux	linux_kernel	2.6.16.28	Yes
Operating System	linux	linux_kernel	2.6.16.29	Yes
Operating System	linux	linux_kernel	2.6.16.30	Yes
Operating System	linux	linux_kernel	2.6.16.31	Yes
Operating System	linux	linux_kernel	2.6.17	Yes
Operating System	linux	linux_kernel	2.6.17.1	Yes
Operating System	linux	linux_kernel	2.6.17.2	Yes
Operating System	linux	linux_kernel	2.6.17.3	Yes
Operating System	linux	linux_kernel	2.6.17.4	Yes
Operating System	linux	linux_kernel	2.6.17.5	Yes
Operating System	linux	linux_kernel	2.6.17.6	Yes
Operating System	linux	linux_kernel	2.6.17.7	Yes
Operating System	linux	linux_kernel	2.6.17.8	Yes
Operating System	linux	linux_kernel	2.6.17.9	Yes
Operating System	linux	linux_kernel	2.6.17.10	Yes
Operating System	linux	linux_kernel	2.6.17.11	Yes
Operating System	linux	linux_kernel	2.6.17.12	Yes
Operating System	linux	linux_kernel	2.6.17.13	Yes
Operating System	linux	linux_kernel	2.6.17.14	Yes
Operating System	linux	linux_kernel	2.6.18.1	Yes
Operating System	linux	linux_kernel	2.6.18.2	Yes
Operating System	linux	linux_kernel	2.6.18.3	Yes
Operating System	linux	linux_kernel	2.6.18.4	Yes
Operating System	linux	linux_kernel	2.6.18.5	Yes
Operating System	linux	linux_kernel	2.6.18.6	Yes
Operating System	linux	linux_kernel	2.6.18.7	Yes
Operating System	linux	linux_kernel	2.6.18.8	Yes
Operating System	linux	linux_kernel	2.6.22	Yes
Operating System	linux	linux_kernel	2.6.22.2	Yes
Operating System	linux	linux_kernel	2.6.22.3	Yes
Operating System	linux	linux_kernel	2.6.22.4	Yes
Operating System	linux	linux_kernel	2.6.22.5	Yes
Operating System	linux	linux_kernel	2.6.22.6	Yes
Operating System	linux	linux_kernel	2.6.22.7	Yes
Operating System	linux	linux_kernel	2.6.23	Yes
Operating System	linux	linux_kernel	2.6.23	Yes
Operating System	linux	linux_kernel	2.6.23	Yes
Operating System	linux	linux_kernel	2.6.23.1	Yes
Operating System	linux	linux_kernel	2.6.23.2	Yes
Operating System	linux	linux_kernel	2.6.23.3	Yes
Operating System	linux	linux_kernel	2.6.23.4	Yes
Operating System	linux	linux_kernel	2.6.23.5	Yes
Operating System	linux	linux_kernel	2.6.23.6	Yes
Operating System	linux	linux_kernel	2.6.23.7	Yes
Operating System	linux	linux_kernel	2.6.24	Yes
Operating System	linux	linux_kernel	2.6.24	Yes
Operating System	linux	linux_kernel	2.6.24	Yes
Operating System	linux	linux_kernel	2.6.24	Yes
Operating System	linux	linux_kernel	2.6.24	Yes
Operating System	linux	linux_kernel	2.6.32	Yes
Operating System	linux	linux_kernel	2.6.32.1	Yes
Operating System	linux	linux_kernel	2.6.32.2	Yes
Operating System	linux	linux_kernel	2.6.32.3	Yes
Operating System	linux	linux_kernel	2.6.32.4	Yes
Operating System	linux	linux_kernel	2.6.33	Yes
Operating System	linux	linux_kernel	2.6.33	Yes
Operating System	linux	linux_kernel	2.6.33	Yes

References

http://archives.neohapsis.com/archives/fulldisclosure/2010-01/0252.html Exploit ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=53281b6d34d44308372d16acb7fb5327609f68b6 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.html ([email protected])
http://lock.cmpxchg8b.com/5ebe2294ecd0e0f08eab7690d2a6ee69/create_elf_tables.c Exploit ([email protected])
http://secunia.com/advisories/38199 Vendor Advisory ([email protected])
http://secunia.com/advisories/39033 ([email protected])
http://support.avaya.com/css/P8/documents/100073666 ([email protected])
http://twitter.com/taviso/statuses/7744108017 Patch ([email protected])
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.33-rc4-git1.bz2 Patch ([email protected])
http://www.redhat.com/support/errata/RHSA-2010-0161.html ([email protected])
http://www.securityfocus.com/bid/37806 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=547906 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7054 ([email protected])
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9201 ([email protected])
https://rhn.redhat.com/errata/RHSA-2010-0046.html ([email protected])
https://rhn.redhat.com/errata/RHSA-2010-0095.html ([email protected])
http://archives.neohapsis.com/archives/fulldisclosure/2010-01/0252.html Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=53281b6d34d44308372d16acb7fb5327609f68b6 (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.html (af854a3a-2127-422b-91ae-364da2661108)
http://lock.cmpxchg8b.com/5ebe2294ecd0e0f08eab7690d2a6ee69/create_elf_tables.c Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/38199 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/39033 (af854a3a-2127-422b-91ae-364da2661108)
http://support.avaya.com/css/P8/documents/100073666 (af854a3a-2127-422b-91ae-364da2661108)
http://twitter.com/taviso/statuses/7744108017 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.33-rc4-git1.bz2 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2010-0161.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/37806 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=547906 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7054 (af854a3a-2127-422b-91ae-364da2661108)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9201 (af854a3a-2127-422b-91ae-364da2661108)
https://rhn.redhat.com/errata/RHSA-2010-0046.html (af854a3a-2127-422b-91ae-364da2661108)
https://rhn.redhat.com/errata/RHSA-2010-0095.html (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.