CVE-2009-0028

Linux kernel <2.6.28 - Privilege Escalation

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-0028. PoCs published by Chris Evans.

AI-analyzed exploit summary This exploit demonstrates a signal-handling weakness in the Linux kernel (CVE-2009-0028) by creating a child process with CLONE_PARENT and SIGKILL flags, allowing arbitrary signals to be sent to a privileged parent process. It leverages fork() and clone() to trigger the vulnerability, potentially leading to a denial-of-service condition.

Description

The clone system call in the Linux kernel 2.6.28 and earlier allows local users to send arbitrary signals to a parent process from an unprivileged child process by launching an additional child process with the CLONE_PARENT flag, and then letting this new process exit.

Exploits (1)

exploitdb WORKING POC VERIFIED

by Chris Evans · cdoslinux

https://www.exploit-db.com/exploits/32815

View Code ZIP pw:eip

This exploit demonstrates a signal-handling weakness in the Linux kernel (CVE-2009-0028) by creating a child process with CLONE_PARENT and SIGKILL flags, allowing arbitrary signals to be sent to a privileged parent process. It leverages fork() and clone() to trigger the vulnerability, potentially leading to a denial-of-service condition.

Classification

Working Poc 90%

Attack Type

Dos

Complexity

Moderate

Reliability

Reliable

Target: Linux kernel 2.6.28 (and possibly other versions)

No auth needed

Prerequisites: Local access to the target system · Ability to execute unprivileged code

MITRE ATT&CK

T1499 - Endpoint Denial of Service

devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (35)

Core 35

Core References

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35390

Vendor Advisory vendor-advisory x_refsource_redhat

http://www.redhat.com/support/errata/RHSA-2009-0326.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/34962

Vendor Advisory vendor-advisory x_refsource_mandriva

http://www.mandriva.com/security/advisories?name=MDVSA-2009:118

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00003.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/37471

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2009-0459.html

Vendor Advisory x_refsource_confirm

http://www.vmware.com/security/advisories/VMSA-2009-0016.html

Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11187

Issue Tracking x_refsource_confirm

https://bugzilla.redhat.com/show_bug.cgi?id=479932

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2009/dsa-1794

Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq

http://www.securityfocus.com/archive/1/503610/100/0/threaded

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/33758

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/33906

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/usn-751-1

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35011

Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq

http://www.securityfocus.com/archive/1/507985/100/0/threaded

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35120

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html

Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7947

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/34033

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/34981

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2009/dsa-1800

Various Sources x_refsource_misc

http://scarybeastsecurity.blogspot.com/2009/02/linux-kernel-minor-signal-vulnerability.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/34917

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2009/dsa-1787

Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb

http://osvdb.org/52204

Third Party Advisory x_refsource_confirm

http://wiki.rpath.com/Advisories:rPSA-2009-0084

Vendor Advisory vendor-advisory x_refsource_redhat

http://www.redhat.com/support/errata/RHSA-2009-0451.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35121

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/34680

Third Party Advisory vdb-entry x_refsource_vupen

http://www.vupen.com/english/advisories/2009/3316

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35394

Various Sources x_refsource_misc

http://scary.beasts.org/security/CESA-2009-002.html

Scores

EPSS 0.0070

EPSS Percentile 48.1%

Details

CWE

CWE-264

Status published

Products (50)

linux/linux_kernel 2.2.27

linux/linux_kernel 2.4.36

linux/linux_kernel 2.4.36.1

linux/linux_kernel 2.4.36.2

linux/linux_kernel 2.4.36.3

linux/linux_kernel 2.4.36.4

linux/linux_kernel 2.4.36.5

linux/linux_kernel 2.4.36.6

linux/linux_kernel 2.6

linux/linux_kernel 2.6.0

... and 40 more

Published Feb 27, 2009

Tracked Since Feb 18, 2026