CVE-2009-1388

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-07-05 · updated 2026-06-16
Weakness: CWE-667

Description

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.

Affected products

Linux kernel: 2.6.18

References

http://marc.info/?l=oss-security&m=124654277229434&w=2
http://osvdb.org/55679
http://secunia.com/advisories/36131
http://secunia.com/advisories/37471
http://www.redhat.com/support/errata/RHSA-2009-1193.html
http://www.securityfocus.com/archive/1/507985/100/0/threaded
http://www.securityfocus.com/bid/35559
http://www.vmware.com/security/advisories/VMSA-2009-0016.html
http://www.vupen.com/english/advisories/2009/3316
https://bugzilla.redhat.com/attachment.cgi?id=346615
https://bugzilla.redhat.com/attachment.cgi?id=346742
https://bugzilla.redhat.com/show_bug.cgi?id=504263

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