What is CVE-2009-3043?

CVE-2009-3043 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10. CVE-2009-3043 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-3043?

CVE-2009-3043 has a CVSS score of 4.9 out of 10, rated Medium severity. The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2009-3043?

No patch is currently available for CVE-2009-3043. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2009-3043 actively exploited?

CVE-2009-3043 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2009-3043

Medium

The tty_ldisc_hangup function in drivers/char/tty_ldisc.c in the Linux kernel 2.6.31-rc before 2.6.31-rc8 allows local users to cause a denial of service (system crash, sometimes preceded by a NULL pointer dereference) or possibly gain privileges via certain pseudo-terminal I/O activity, as demonstrated by KernelTtyTest.c.

Package Linux Kernel

Published 2009-09-02

Last modified 2026-04-23

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.9

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

Vector string

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

Weakness type

CWE-399

CVE-2009-3043 is classified as CWE-399

See CWE-399 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2009-3043 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Lkml
http://lkml.org/lkml/2009/8/20/21

Exploit
Lkml
http://lkml.org/lkml/2009/8/20/27

Exploit
Lkml
http://lkml.org/lkml/2009/8/20/68
Kernel.org
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.31-rc8
Openwall
http://www.openwall.com/lists/oss-security/2009/08/31/1
Openwall
http://www.openwall.com/lists/oss-security/2009/09/03/6
Openwall
http://www.openwall.com/lists/oss-security/2009/09/03/7
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5c58ceff103d8a654f24769bb1baaf84a841b0cc
Patch
Kernel patch commit
http://www.securityfocus.com/bid/36191
Patch

Details

CVE ID CVE-2009-3043

Severity Medium

CVSS score 4.9 / 10

CVSS version 2.0

Published 2009-09-02

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-3043?

CVE-2009-3043 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 . CVE-2009-3043 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-3043?

CVE-2009-3043 has a CVSS score of 4.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2009-3043?

No patch is currently available for CVE-2009-3043. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2009-3043 actively exploited?

No — CVE-2009-3043 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.