Vulnerability Monitor

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CVE-2009-4895

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.

Published

2010-09-08T20:00:02.620

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

6.9

Weaknesses

Type: Primary
CWE-362
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 2.6.32.6	Yes
Operating System	debian	debian_linux	5.0	Yes
Operating System	canonical	ubuntu_linux	6.06	Yes
Operating System	canonical	ubuntu_linux	8.04	Yes
Operating System	canonical	ubuntu_linux	9.04	Yes
Operating System	canonical	ubuntu_linux	9.10	Yes
Operating System	canonical	ubuntu_linux	10.04	Yes
Operating System	canonical	ubuntu_linux	10.10	Yes

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=703625118069f9f8960d356676662d3db5a9d116 Broken Link ([email protected])
http://www.debian.org/security/2010/dsa-2094 Third Party Advisory ([email protected])
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.6 Broken Link ([email protected])
http://www.openwall.com/lists/oss-security/2010/06/15/2 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2010/06/15/3 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2010/06/15/4 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2010/06/15/5 Mailing List, Third Party Advisory ([email protected])
http://www.ubuntu.com/usn/USN-1000-1 Third Party Advisory ([email protected])
https://bugzilla.kernel.org/show_bug.cgi?id=14605 Issue Tracking, Patch ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=559100 Issue Tracking, Third Party Advisory ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=703625118069f9f8960d356676662d3db5a9d116 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2010/dsa-2094 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.6 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2010/06/15/2 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2010/06/15/3 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2010/06/15/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2010/06/15/5 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-1000-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.kernel.org/show_bug.cgi?id=14605 Issue Tracking, Patch (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=559100 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)