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CVE-2009-1388

The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle...

5.5 Medium

The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle simultaneous execution of the do_coredump function, which allows local users to cause a denial of service (deadlock) via vectors involving the ptrace system call and a coredumping thread.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.36%Down 1.8 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 5.5

The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle simultaneous execution of the do_coredump function, which allows local users to cause a denial of service (deadlock) via vectors involving the ptrace system call and a coredumping thread.

Record
CVE-2009-1388
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
4.9 MediumAV:L/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-667
Updated
2026-11-02
CVE List No score

The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle simultaneous execution of the do_coredump function, which allows local users to cause a denial of service (deadlock) via vectors involving the ptrace system call and a coredumping thread.

Record
CVE-2009-1388
Updated
2026-11-02
EUVDEUVD-2009-1386 No score

The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle simultaneous execution of the do_coredump function, which allows local users to cause a denial of service (deadlock) via vectors involving the ptrace system call and a coredumping thread.

Record
EUVD-2009-1386
Updated
2026-11-03
GitHub AdvisoriesGHSA-674m-p5v7-mcqp 5.5

The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle...

The ptrace_start function in kernel/ptrace.c in the Linux kernel 2.6.18 does not properly handle simultaneous execution of the do_coredump function, which allows local users to cause a denial of service (deadlock) via vectors involving the ptrace system call and a coredumping thread.

Record
GHSA-674m-p5v7-mcqp
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-362, CWE-667
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
kernel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
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Affected packages
PackageAffectedFixed
kernel-doc
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-headers
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo-common
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-doc
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-headers
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-debuginfo
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-devel
Red Hat:rhel_eus:5.3
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-PAE-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debug-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-debuginfo-common
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-doc
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-headers
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-kdump-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5
kernel-xen-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 7 CVEs
 before 0:2.6.18-128.4.1.el5
0:2.6.18-128.4.1.el5

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2009-1388 is a medium vulnerability (CVSS 5.5) in Linux Kernel, published July 5, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 30th percentile. No source names a fixed version.

References

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