CVE-2009-1388 json
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…
published 2009-07-05 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1386
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- kernel RHEL 5.3 EUS, RHEL 5 2.6.18-128.4.1.el5
- kernel-PAE RHEL 5.3 EUS, RHEL 5 2.6.18-128.4.1.el5
- kernel-xen RHEL 5.3 EUS, RHEL 5 2.6.18-128.4.1.el5
- kernel-kdump RHEL 5.3 EUS, RHEL 5 2.6.18-128.4.1.el5
- kernel-debuginfo-common RHEL 5.3 EUS, RHEL 5 2.6.18-128.4.1.el5
red hat advisories RHSA-2009:1193
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2009-1388 updated cvss 2.1
kernel: do_coredump() vs ptrace_start() deadlock
-
Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-128.4.1.el5, kernel-PAE 2.6.18-128.4.1.el5, kernel-xen 2.6.18-128.4.1.el5, kernel-kdump 2.6.18-128.4.1.el5, kernel-debuginfo-common 2.6.18-128.4.1.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-128.4.1.el5, kernel-PAE 2.6.18-128.4.1.el5, kernel-xen 2.6.18-128.4.1.el5, kernel-kdump 2.6.18-128.4.1.el5, kernel-debuginfo-common 2.6.18-128.4.1.el5 Red Hat Enterprise Linux EUS (v. 5.3 server) kernel 2.6.18-128.4.1.el5, kernel-PAE 2.6.18-128.4.1.el5, kernel-xen 2.6.18-128.4.1.el5, kernel-kdump 2.6.18-128.4.1.el5, kernel-debuginfo-common 2.6.18-128.4.1.el5fixed: vendor fix RHSA-2009:1193
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-667 Improper Locking
- Technology feeds
References
-
bugzilla.redhat.com
/attachment.cgi?id=346615
mailing-list, patch
-
bugzilla.redhat.com
/show_bug.cgi?id=504263
issue-tracking, patch
-
bugzilla.redhat.com
/attachment.cgi?id=346742
patch
-
marc.info
/?l=oss-security&m=124654277229434&w=2
mailing-list, patch
-
redhat.com
/support/errata/RHSA-2009-1193.html
vendor-advisory, broken-link
-
secunia.com
/advisories/36131
third-party-advisory, broken-link
-
secunia.com
/advisories/37471
third-party-advisory, broken-link
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8680
vdb-entry, signature, broken-link
-
vmware.com
/security/advisories/VMSA-2009-0016.html
third-party-advisory
-
securityfocus.com
/archive/1/507985/100/0/threaded
mailing-list, broken-link, third-party-advisory, vdb-entry
-
osvdb.org
/55679
vdb-entry, broken-link
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8625
vdb-entry, signature, broken-link
-
securityfocus.com
/bid/35559
vdb-entry, broken-link, third-party-advisory
-
vupen.com
/english/advisories/2009/3316
vdb-entry, broken-link
Sources
- CVE List CVE-2009-1388
- NVD CVE-2009-1388
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.