CVE-2009-1337

Linux Kernel < 2.6.29 - Local Privilege Escalation via exit_signal Field Manipulation

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-1337. PoCs published by gat3way.

AI-analyzed exploit summary This exploit leverages a Linux kernel vulnerability (CVE-2009-1337) in exit_notify() to send arbitrary signals to a privileged parent process, bypassing privilege checks. It uses chfn and gpasswd to escalate privileges and requires suid_dumpable to be set to 1 or 2.

Description

The exit_notify function in kernel/exit.c in the Linux kernel before 2.6.30-rc1 does not restrict exit signals when the CAP_KILL capability is held, which allows local users to send an arbitrary signal to a process by running a program that modifies the exit_signal field and then uses an exec system call to launch a setuid application.

Exploits (1)

exploitdb WORKING POC VERIFIED

by gat3way · bashlocallinux

https://www.exploit-db.com/exploits/8369

View Code ZIP pw:eip

This exploit leverages a Linux kernel vulnerability (CVE-2009-1337) in exit_notify() to send arbitrary signals to a privileged parent process, bypassing privilege checks. It uses chfn and gpasswd to escalate privileges and requires suid_dumpable to be set to 1 or 2.

Classification

Working Poc 95%

Attack Type

Lpe

Complexity

Moderate

Reliability

Racy

Target: Linux kernel <2.6.29

No auth needed

Prerequisites: suid_dumpable set to 1 or 2 · logrotate installed · gcc compiler available

MITRE ATT&CK

T1068 - Exploitation for Privilege Escalation

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

References (49)

Core 49

Core References

Vendor Advisory vendor-advisory x_refsource_mandriva

http://www.mandriva.com/security/advisories?name=MDVSA-2009:135

Vendor Advisory vendor-advisory x_refsource_fedora

https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01126.html

Issue Tracking x_refsource_confirm

https://bugzilla.redhat.com/show_bug.cgi?id=493771

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/35390

Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq

http://www.securityfocus.com/archive/1/512019/100/0/threaded

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35226

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00002.html

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/37471

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35160

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html

Mailing List mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2009/04/07/1

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35656

Vendor Advisory x_refsource_confirm

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

Patch x_refsource_confirm

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=432870dab85a2f69dc417022646cb9a70acf7f94

Third Party Advisory vendor-advisory x_refsource_debian

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

Mailing List vendor-advisory x_refsource_suse

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

Mailing List mailing-list x_refsource_mlist

http://marc.info/?l=linux-kernel&m=123560588713763&w=2

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35324

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35185

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35015

Patch x_refsource_confirm

http://patchwork.kernel.org/patch/16544/

Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11206

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

Vendor Advisory vendor-advisory x_refsource_ubuntu

http://www.ubuntu.com/usn/usn-793-1

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

Vendor Advisory vendor-advisory x_refsource_redhat

http://www.redhat.com/support/errata/RHSA-2009-1077.html

Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack

http://www.securitytracker.com/id?1022141

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/34405

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35387

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/34917

Vendor Advisory vendor-advisory x_refsource_redhat

https://rhn.redhat.com/errata/RHSA-2009-1550.html

Third Party Advisory vendor-advisory x_refsource_debian

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

Vendor Advisory vendor-advisory x_refsource_redhat

http://www.redhat.com/support/errata/RHSA-2009-1024.html

Vendor Advisory vendor-advisory x_refsource_mandriva

http://www.mandriva.com/security/advisories?name=MDVSA-2009:119

Mailing List mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2009/04/17/3

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2009-0473.html

Third Party Advisory x_refsource_confirm

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

Vendor Advisory x_refsource_confirm

http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.30-rc1

Vendor Advisory vendor-advisory x_refsource_redhat

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

Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8295

Third Party Advisory third-party-advisory x_refsource_secunia

http://secunia.com/advisories/35121

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

Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval

https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10919

Scores

EPSS 0.0126

EPSS Percentile 65.6%

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 Apr 22, 2009

Tracked Since Feb 18, 2026