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VULNERABILITIES

CVE-2009-4895 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.7 MEDIUMVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=703625118069f9f8960d356676662d3db5a9d116 CVEBroken Link
https://bugzilla.kernel.org/show_bug.cgi?id=14605 CVEIssue TrackingPatch
https://bugzilla.redhat.com/show_bug.cgi?id=559100 CVEIssue TrackingThird Party Advisory
http://www.debian.org/security/2010/dsa-2094 CVEThird Party Advisory
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32.6 CVEBroken Link

see all 20 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')[email protected]
CWE-476NULL Pointer Dereference[email protected]

Affected Products

ProductVersions
linux linux kernel
< 2.6.32.6

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
debian debian linux
5.0

CPE

  • cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
canonical ubuntu linux
6.06
8.04
9.04
9.10
10.04

CPE

  • cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:9.10:*:*:*:*:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2009-4895
NVD Published Date:
Sep 8, 2010
NVD Last Modified:
Jun 16, 2026
Source:
[email protected]
CVE-2009-4895 Details - Not Deferred