CVEvulnerability

CVE-2009-4895

4.7 MEDIUM Published 2010-09-08 Modified 2026-06-16 Official page ↗

Status: Modified
Published: 2010-09-08
Last modified: 2026-06-16
Assigner: [email protected]
CVSS 3.1 ([email protected]): 4.7 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected]): 4.7 MEDIUM — AV:L/AC:M/Au:N/C:N/I:N/A:C
Weaknesses: CWE-362, CWE-476

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.

Affected configurations

• linux linux kernel (< 2.6.32.6) • debian debian linux 5.0 • 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

Weakness · CWE (2)

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness
CWE-476 NULL Pointer Dereference weakness

Referenced by CWE · observed example (2)

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness
CWE-476 NULL Pointer Dereference weakness

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=703625118069f9f8960d356676662d3db5a9d116 Broken Link
http://www.debian.org/security/2010/dsa-2094 Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.6 Broken Link
http://www.openwall.com/lists/oss-security/2010/06/15/2 Mailing List, Patch, 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 Mailing List, Third Party Advisory
http://www.ubuntu.com/usn/USN-1000-1 Third Party Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=14605 Issue Tracking, Patch
https://bugzilla.redhat.com/show_bug.cgi?id=559100 Issue Tracking, Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=703625118069f9f8960d356676662d3db5a9d116 Broken Link
http://www.debian.org/security/2010/dsa-2094 Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.6 Broken Link
http://www.openwall.com/lists/oss-security/2010/06/15/2 Mailing List, Patch, 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 Mailing List, Third Party Advisory
http://www.ubuntu.com/usn/USN-1000-1 Third Party Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=14605 Issue Tracking, Patch
https://bugzilla.redhat.com/show_bug.cgi?id=559100 Issue Tracking, Third Party Advisory