PT-2010-1326 · Linux+1 · Linux Kernel+1

Tavis Ormandy · Published 2010-01-19 · Updated 2023-02-13 · CVE-2009-4141

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 2.6.33-rc4-git1

Description The issue is related to a use-after-free vulnerability in the fasync helper function, located in fs/fcntl.c. This vulnerability can be exploited by local users to gain privileges. The exploitation vectors include enabling O ASYNC (also known as FASYNC or FIOASYNC) on a locked file and then closing the file.

Recommendations For Linux kernel versions prior to 2.6.33-rc4-git1, update to version 2.6.33-rc4-git1 or later to resolve the issue.

Exploit

Fix

Weakness Enumeration

CWE-399

Related Identifiers

CVE-2009-4141

RHSA-2010:0046

RHSA-2010:0149

RHSA-2010:0161

RHSA-2010_0046

Affected Products

Linux Kernel

Red Hat

References · 43

• 🔥 http://lock.cmpxchg8b.com/5ebe2294ecd0e0f08eab7690d2a6ee69/create_elf_tables.c · Exploit
• 🔥 http://archives.neohapsis.com/archives/fulldisclosure/2010-01/0252.html · Exploit
• 🔥 https://exploit-db.com/exploits/33523 · Exploit
• https://rhn.redhat.com/errata/RHSA-2010-0095.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2015-06109 · Security Note
• http://twitter.com/taviso/statuses/7744108017 · Patch
• https://bdu.fstec.ru/vul/2015-06108 · Security Note
• https://bdu.fstec.ru/vul/2015-06106 · Security Note
• http://secunia.com/advisories/38199 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00002.html · Vendor Advisory
• http://redhat.com/support/errata/RHSA-2010-0161.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2015-06105 · Security Note
• https://bdu.fstec.ru/vul/2015-06104 · Security Note
• https://bdu.fstec.ru/vul/2015-05250 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2009-4141 · Security Note