CVE-2009-4895

MEDIUM

Linux Kernel < 2.6.32.6 - Race Condition

Title source: rule

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)

[Broken Link] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=703625118069f9f8960d356676662d3db5a9d116

[Third Party Advisory] http://www.debian.org/security/2010/dsa-2094

[Broken Link] http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.6

[Mailing List, Patch, Third Party Advisory] http://www.openwall.com/lists/oss-security/2010/06/15/2

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2010/06/15/3

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2010/06/15/4

[Mailing List, Third Party Advisory] http://www.openwall.com/lists/oss-security/2010/06/15/5

[Third Party Advisory] http://www.ubuntu.com/usn/USN-1000-1

[Issue Tracking, Patch] https://bugzilla.kernel.org/show_bug.cgi?id=14605

[Issue Tracking, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=559100

Scores

CVSS v3 4.7

EPSS 0.0006

EPSS Percentile 19.8%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-362 CWE-476

Status draft

Affected Products (8)

linux/linux_kernel < 2.6.32.6

debian/debian_linux

canonical/ubuntu_linux

canonical/ubuntu_linux

canonical/ubuntu_linux

canonical/ubuntu_linux

canonical/ubuntu_linux

canonical/ubuntu_linux

Timeline

Published Sep 08, 2010

Tracked Since Feb 18, 2026