CVE-2009-4895

MEDIUM

Linux Kernel < 2.6.32.6 - Race Condition in tty_fasync

Title source: llm
STIX 2.1

Description

Race condition in the tty_fasync function in drivers/char/tty_io.c in the Linux kernel before 2.6.32.6 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via unknown vectors, related to the put_tty_queue and __f_setown functions. NOTE: the vulnerability was addressed in a different way in 2.6.32.9.

References (10)

Core 10
Core References
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2010/06/15/5
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-1000-1
Issue Tracking, Patch x_refsource_confirm
https://bugzilla.kernel.org/show_bug.cgi?id=14605
Mailing List, Patch, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2010/06/15/2
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2010/06/15/3
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2010/06/15/4
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=559100
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2010/dsa-2094

Scores

CVSS v3 4.7
EPSS 0.0026
EPSS Percentile 17.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-362 CWE-476
Status published
Products (8)
canonical/ubuntu_linux 6.06
canonical/ubuntu_linux 8.04
canonical/ubuntu_linux 9.04
canonical/ubuntu_linux 9.10
canonical/ubuntu_linux 10.04
canonical/ubuntu_linux 10.10
debian/debian_linux 5.0
linux/linux_kernel < 2.6.32.6
Published Sep 08, 2010
Tracked Since Feb 18, 2026