What is CVE-2009-2692?

CVE-2009-2692 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2009-2692 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2009-2692?

CVE-2009-2692 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2009-2692?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-2692 patch availability.

Is CVE-2009-2692 actively exploited?

CVE-2009-2692 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2009-2692

High

The Linux kernel 2.6.0 through 2.6.30.4, and 2.4.4 through 2.4.37.4, does not initialize all function pointers for socket operations in proto_ops structures, which allows local users to trigger a NULL pointer dereference and gain privileges by using mmap to map page zero, placing arbitrary code on this page, and then invoking an unavailable operation, as demonstrated by the sendpage operation (sock_sendpage function) on a PF_PPPOX socket.

Package Linux Kernel

Published 2009-08-14

Last modified 2026-04-23

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-908

CVE-2009-2692 is classified as CWE-908

See CWE-908 on MITRE CWE for full details on this weakness type.

References

39 total

Archives
http://archives.neohapsis.com/archives/fulldisclosure/2009-08/0174.html

Broken Link Exploit
Blog
http://blog.cr0.org/2009/08/linux-null-pointer-dereference-due-to.html

Exploit Issue Tracking
Exploit-DB
http://www.exploit-db.com/exploits/19933

Exploit Third Party Advisory VDB Entry
Securityfocus
http://www.securityfocus.com/bid/36038

Broken Link Exploit Third Party Advisory VDB Entry
Secunia
http://secunia.com/advisories/36278

Broken Link Vendor Advisory

Showing 5 of 39 references View all on NVD

Details

CVE ID CVE-2009-2692

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2009-08-14

Modified 2026-04-23

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2009-2692?

CVE-2009-2692 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2009-2692 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2009-2692?

CVE-2009-2692 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2009-2692?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2009-2692 patch availability.
Is CVE-2009-2692 actively exploited?

No. CVE-2009-2692 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.