CVE-2009-4895

MEDIUM

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

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=703625118069f9f8960d356676662d3db5a9d116

http://www.debian.org/security/2010/dsa-2094

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.6

http://www.openwall.com/lists/oss-security/2010/06/15/2

http://www.openwall.com/lists/oss-security/2010/06/15/3

http://www.openwall.com/lists/oss-security/2010/06/15/4

http://www.openwall.com/lists/oss-security/2010/06/15/5

http://www.ubuntu.com/usn/USN-1000-1

https://bugzilla.kernel.org/show_bug.cgi?id=14605

https://bugzilla.redhat.com/show_bug.cgi?id=559100

Details

Source: MITRE

Published: 2010-09-08

Updated: 2012-03-19

Type: CWE-362

Risk Information

CVSS v2.0

Base Score: 4.7

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

Impact Score: 6.9

Exploitability Score: 3.4

Severity: MEDIUM