CVE-2009-2692
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...
- Published
- Aug 14, 2009
- Updated
- Aug 7, 2024
- Assigning CNA
- mitre
- Evidence observed
- Aug 14, 2009
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HModerate · next 30 days
- Percentile
- 96.6%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
12- CVE-2009-2692Exploit
Compiled binary of CVE-2009-2692 Linux null pointer dereference exploit for educational demonstration of kernel privilege escalation.
- 2009PoC
Collection of Linux kernel exploits targeting CVE-2009-1185, CVE-2009-1337, CVE-2009-2692, CVE-2009-2698, and CVE-2009-3547, providing proof-of-concept code for privilege escalation.
- LinuxEelvationExploit
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