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.
Published 2009-08-14 15:16:28
Updated 2024-02-08 23:50:03
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Memory Corruption

Products affected by CVE-2009-2692

Threat overview for CVE-2009-2692

Top countries where our scanners detected CVE-2009-2692
Top open port discovered on systems with this issue 52869
IPs affected by CVE-2009-2692 42,316
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2009-2692!
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Exploit prediction scoring system (EPSS) score for CVE-2009-2692

0.05%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 14 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2009-2692

  • Linux Kernel Sendpage Local Privilege Escalation
    Disclosure Date: 2009-08-13
    First seen: 2020-04-26
    exploit/linux/local/sock_sendpage
    The Linux kernel failed to properly initialize some entries in the proto_ops struct for several protocols, leading to NULL being dereferenced and used as a function pointer. By using mmap(2) to map page 0, an attacker can execute arbitrary code in the context of the

CVSS scores for CVE-2009-2692

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.2
HIGH AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0
NIST
7.8
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
NIST 2024-02-09

CWE ids for CVE-2009-2692

Vendor statements for CVE-2009-2692

  • Red Hat 2009-09-14
    Red Hat is aware of this issue. Please see http://kbase.redhat.com/faq/docs/DOC-18065. Updates for Red Hat Enterprise Linux 3, 4, 5, and Red Hat Enterprise MRG to correct this issue are available: https://rhn.redhat.com/cve/CVE-2009-2692.html

References for CVE-2009-2692

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