Vulnerability in Linux Kernel
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 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 · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.146 (96.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.146 · newest: 0.146 · change: 0.000
Affected products
- Linux Kernel
- Debian Linux — versions 4.0
- Red Hat Enterprise Linux Desktop — versions 4.0, 5.0
- Red Hat Enterprise Linux Eus — versions 4.8, 5.3
- Red Hat Enterprise Linux Server — versions 4.0, 5.0
- Red Hat Enterprise Linux Server Aus — versions 5.3
- Red Hat Enterprise Linux Workstation — versions 4.0, 5.0
- SUSE Linux Enterprise Real Time — versions 10
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.redhat.com/support/errata/RHSA-2009-1233.html (vendor-advisory, Broken Link)
- secunia.com/advisories/36278 (Broken Link, Vendor Advisory, third-party-advisory)
- www.debian.org/security/2009/dsa-1865 (vendor-advisory, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2009-1223.html (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/archive/1/512019/100/0/threaded (mailing-list, VDB Entry, Third Party Advisory, Broken Link)
- www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.37.5 (Broken Link, Vendor Advisory)
- secunia.com/advisories/37298 (Broken Link, Vendor Advisory, third-party-advisory)
- wiki.rpath.com/wiki/Advisories:rPSA-2009-0121 (Broken Link)
- secunia.com/advisories/36430 (Broken Link, Vendor Advisory, third-party-advisory)
- secunia.com/advisories/37471 (Broken Link, Vendor Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2009-2692?
- CVE-2009-2692 is a high-severity vulnerability in Linux Kernel, classified under Use of Uninitialized Resource. CVSS score: 7.8/10. Published 2009-08-14.
- How severe is CVE-2009-2692?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2009-2692 known to be exploited?
- 77 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.