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CVE-2009-0028

The clone system call in the Linux kernel 2.6.28 and earlier allows local users to send arbitrary...

2.1 LowPublic exploitFix available

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.

Exploit likelihood

0.70%Down 3.3 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 2.1

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.

Record
CVE-2009-0028
CVSS 2.0
2.1 LowAV:L/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-264
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2009-0028
Updated
2026-11-02
EUVDEUVD-2009-0040 No score

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.

Record
EUVD-2009-0040
Updated
2026-11-03
GitHub AdvisoriesGHSA-rvqj-x8r2-p6fr No score

The clone system call in the Linux kernel 2.6.28 and earlier allows local users to send arbitrary...

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.

Record
GHSA-rvqj-x8r2-p6fr
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
linux-2.6.24
Debian:4.0
before 2.6.24-6~etchnhalf.8etch1, plus listed versions
2.6.24-5~etchnhalf.12.6.24-6~etchnhalf.12.6.24-6~etchnhalf.22.6.24-6~etchnhalf.32.6.24-6~etchnhalf.4
Show 4 moreShow less
2.6.24-6~etchnhalf.52.6.24-6~etchnhalf.62.6.24-6~etchnhalf.72.6.24-6~etchnhalf.8
2.6.24-6~etchnhalf.8etch1
linux-2.6
Debian:4.0
before 2.6.18.dfsg.1-24etch2, plus listed versions
2.6.18.dfsg.1-122.6.18.dfsg.1-12etch12.6.18.dfsg.1-12etch22.6.18.dfsg.1-132.6.18.dfsg.1-13etch1
Show 28 moreShow less
2.6.18.dfsg.1-13etch22.6.18.dfsg.1-13etch32.6.18.dfsg.1-13etch42.6.18.dfsg.1-13etch52.6.18.dfsg.1-13etch62.6.18.dfsg.1-13lenny12.6.18.dfsg.1-142.6.18.dfsg.1-152.6.18.dfsg.1-162.6.18.dfsg.1-172.6.18.dfsg.1-17etch12.6.18.dfsg.1-182.6.18.dfsg.1-18etch12.6.18.dfsg.1-18etch32.6.18.dfsg.1-18etch42.6.18.dfsg.1-18etch52.6.18.dfsg.1-18etch62.6.18.dfsg.1-192.6.18.dfsg.1-202.6.18.dfsg.1-212.6.18.dfsg.1-222.6.18.dfsg.1-22etch12.6.18.dfsg.1-22etch22.6.18.dfsg.1-22etch32.6.18.dfsg.1-232.6.18.dfsg.1-23etch12.6.18.dfsg.1-242.6.18.dfsg.1-24etch1
2.6.18.dfsg.1-24etch2
fai-kernels
Debian:4.0
before 1.17+etch.24etch2, plus listed versions
1.171.17+etch.13etch31.17+etch.13etch41.17+etch.13etch51.17+etch.13etch6
Show 22 moreShow less
1.17+etch.161.17+etch.171.17+etch.17etch11.17+etch.18etch11.17+etch.18etch21.17+etch.18etch31.17+etch.18etch41.17+etch.18etch51.17+etch.18etch61.17+etch.211.17+etch.22etch11.17+etch.22etch21.17+etch.22etch31.17+etch.231.17+etch.23etch11.17+etch.241.17+etch11.17+etch21.17+etch31.17+etch41.17+etch51.17etch1
1.17+etch.24etch2
user-mode-linux
Debian:4.0
before 2.6.18-1um-2etch.24etch2, plus listed versions
2.6.18-1um-22.6.18-1um-2etch.13etch32.6.18-1um-2etch.13etch42.6.18-1um-2etch.13etch52.6.18-1um-2etch.13etch6
Show 20 moreShow less
2.6.18-1um-2etch.162.6.18-1um-2etch.172.6.18-1um-2etch.17etch12.6.18-1um-2etch.18etch12.6.18-1um-2etch.18etch22.6.18-1um-2etch.18etch32.6.18-1um-2etch.18etch42.6.18-1um-2etch.18etch52.6.18-1um-2etch.18etch62.6.18-1um-2etch.212.6.18-1um-2etch.22etch12.6.18-1um-2etch.22etch22.6.18-1um-2etch.22etch32.6.18-1um-2etch.232.6.18-1um-2etch.23etch12.6.18-1um-2etch.242.6.18-1um-2etch12.6.18-1um-2etch22.6.18-1um-2etch32.6.18-1um-2etch4
2.6.18-1um-2etch.24etch2
linux-2.6
Debian:5.0
before 2.6.26-15lenny2, plus listed versions
2.6.26-132.6.26-13lenny22.6.26-13lenny2~bpo40+12.6.26-142.6.26-152.6.26-15lenny12.6.26-15~bpo40+12.6.26-15~bpo40+2
2.6.26-15lenny2
user-mode-linux
Debian:5.0
before 2.6.26-1um-2+15lenny2, plus listed versions
2.6.26-1um-22.6.26-1um-2+15
2.6.26-1um-2+15lenny2
kernel
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-PAE
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
Show 91 moreShow less
Affected packages
PackageAffectedFixed
kernel-debug
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-devel
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-doc
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-headers
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-xen
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::client
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-PAE
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-debug
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-devel
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-doc
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-headers
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-kdump
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-kdump-debuginfo
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-kdump-devel
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-xen
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::server
before 0:2.6.18-128.1.6.el5
0:2.6.18-128.1.6.el5
kernel-rt
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-debug
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-debug-debuginfo
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-debug-devel
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-debuginfo
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-debuginfo-common
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-devel
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-doc
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-trace
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-trace-debuginfo
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-trace-devel
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-vanilla
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-vanilla-debuginfo
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel-rt-vanilla-devel
Red Hat:enterprise_mrg:1::el5
before 0:2.6.24.7-111.el5rt
0:2.6.24.7-111.el5rt
kernel
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-debuginfo
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-devel
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-doc
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-hugemem
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-hugemem-devel
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-largesmp
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-largesmp-devel
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-smp
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-smp-devel
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-xenU
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-xenU-devel
Red Hat:enterprise_linux:4::as
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-debuginfo
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-devel
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-doc
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-hugemem
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-hugemem-devel
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-largesmp
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-largesmp-devel
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-smp
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-smp-devel
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-xenU
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-xenU-devel
Red Hat:enterprise_linux:4::desktop
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-debuginfo
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-devel
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-doc
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-hugemem
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-hugemem-devel
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-largesmp
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-largesmp-devel
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-smp
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-smp-devel
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-xenU
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-xenU-devel
Red Hat:enterprise_linux:4::es
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-debuginfo
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-devel
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-doc
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-hugemem
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-hugemem-devel
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-largesmp
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-largesmp-devel
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-smp
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-smp-devel
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-xenU
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL
kernel-xenU-devel
Red Hat:enterprise_linux:4::ws
before 0:2.6.9-78.0.22.EL
0:2.6.9-78.0.22.EL

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBLinux Kernel 2.6.x - Cloned Process 'CLONE_PARENT' Local Origin Validation2009-02-25

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-0028 is a low vulnerability (CVSS 2.1) in Linux Kernel, published February 27, 2009. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.70%, the 53rd percentile. Fixed in linux-2.6.24 2.6.24-6~etchnhalf.8etch1.

References

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