Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 2.6.33 |
Related Weaknesses (CWE)
References
- http://archives.neohapsis.com/archives/fulldisclosure/2010-01/0252.htmlExploit
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.html
- http://lock.cmpxchg8b.com/5ebe2294ecd0e0f08eab7690d2a6ee69/create_elf_tables.cExploit
- http://secunia.com/advisories/38199Vendor Advisory
- http://secunia.com/advisories/39033
- http://support.avaya.com/css/P8/documents/100073666
- http://twitter.com/taviso/statuses/7744108017Patch
- http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.33-rc4-git1.bz2Patch
- http://www.redhat.com/support/errata/RHSA-2010-0161.html
- http://www.securityfocus.com/bid/37806
- https://bugzilla.redhat.com/show_bug.cgi?id=547906
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3
- https://rhn.redhat.com/errata/RHSA-2010-0046.html
FAQ
What is CVE-2009-4141?
CVE-2009-4141 is a vulnerability with a CVSS score of 7.2 (HIGH). 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...
How severe is CVE-2009-4141?
CVE-2009-4141 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-4141?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.