CVE-2009-4141

N/A Unknown
Published: January 19, 2010 Modified: April 23, 2026
View on NVD

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

References to Advisories, Solutions, and Tools

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

32 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
0.1%
29th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-399

Affected Vendors

linux

Related CVEs

CVE-2026-7024 5.4
CVE-2026-7023 6.3
CVE-2026-7022 7.3
CVE-2026-7021 3.5
CVE-2026-7020 5.6