CVE-2009-4895

MEDIUM
4.7
CVSS Score
Published: September 8, 2010 at 07:00 PM UTC
Updated: June 16, 2026 at 11:14 PM UTC
3 products affected across 3 vendorsLinux KernelDebian LinuxUbuntu Linux

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Severity
MEDIUM4.7
Exploit prediction
EPSS 0.3%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 2.6.32.6
Affected range stops below 2.6.32.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (10)

Vendor Advisoryx_refsource_DEBIANThird Party Advisory
http://www.debian.org/security/2010/dsa-2094
Mailing Listx_refsource_MLISTPatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2010/06/15/2
Mailing Listx_refsource_MLISTThird Party Advisory
http://www.openwall.com/lists/oss-security/2010/06/15/3
Mailing Listx_refsource_MLISTThird Party Advisory
http://www.openwall.com/lists/oss-security/2010/06/15/4
Mailing Listx_refsource_MLISTThird Party Advisory
http://www.openwall.com/lists/oss-security/2010/06/15/5
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
http://www.ubuntu.com/usn/USN-1000-1

CVSS

Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362CWE-476

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