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Vulnerability record · CVE-2011-2503 · published 26 July 2012

CVE-2011-2503: Systemtap improper input validation vulnerability

Systemtap · Systemtap

The insert_module function in runtime/staprun/staprun_funcs.c in the systemtap runtime tool (staprun) in SystemTap before 1.6 does not properly validate a module when loading it, which allows local users to gain privileges via a race condition between the signature validation and the module initialization.

3.7 CVSS 2.0 Low EPSS 0.44% · top 64.2% CWE-20 · Improper input validation
3.7CVSS 2.0 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
16 Jun 2026Last modified by NVD

Description

The insert_module function in runtime/staprun/staprun_funcs.c in the systemtap runtime tool (staprun) in SystemTap before 1.6 does not properly validate a module when loading it, which allows local users to gain privileges via a race condition between the signature validation and the module initialization.

AV:L/AC:H/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/45377 Vendor Advisory
http://secunia.com/advisories/46920 Vendor Advisory
http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git%3Ba=blob%3Bf=NEWS%3Bhb=304d73b1fea24af791f2a129fb141c5009eae6a8
http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git%3Ba=commitdiff%3Bh=ed51cfa24ca27746ab09b59280b94117dd58cba3
http://www.debian.org/security/2011/dsa-2348
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2503
http://secunia.com/advisories/45377 Vendor Advisory
http://secunia.com/advisories/46920 Vendor Advisory
http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git%3Ba=blob%3Bf=NEWS%3Bhb=304d73b1fea24af791f2a129fb141c5009eae6a8
http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git%3Ba=commitdiff%3Bh=ed51cfa24ca27746ab09b59280b94117dd58cba3
http://www.debian.org/security/2011/dsa-2348
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2503

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2009-4273Systemtap code injection vulnerabilitystap-server in SystemTap before 1.1 allows remote attackers to execute arbitrary commands via shell metacharacters in stap command-line arguments in …EPSS 18%7.5CVE-2010-0412Systemtap vulnerabilitystap-server in SystemTap 1.1 does not properly restrict the value of the -B (aka BUILD) option, which allows attackers to have an unspecified impact …EPSS 1.7%7.2CVE-2010-4170Systemtap permissions and access controls vulnerabilityThe staprun runtime tool in SystemTap 1.3 does not properly clear the environment before executing modprobe, which allows local users to gain privile…EPSS 5.3%6.3CVE-2009-0784Systemtap race condition vulnerabilityRace condition in the SystemTap stap tool 0.0.20080705 and 0.0.20090314 allows local users in the stapusr group to insert arbitrary SystemTap kernel …EPSS 0.26%5.4CVE-2012-0875Systemtap permissions and access controls vulnerabilitySystemTap 1.7, 1.6.7, and probably other versions, when unprivileged mode is enabled, allows local users to obtain sensitive information from kernel …EPSS 0.35%4.9CVE-2010-0411Systemtap vulnerabilityMultiple integer signedness errors in the (1) __get_argv and (2) __get_compat_argv functions in tapset/aux_syscalls.stp in SystemTap 1.1 allow local …EPSS 0.95%4.4CVE-2011-2502Systemtap improper input validation vulnerabilityruntime/staprun/staprun_funcs.c in the systemtap runtime tool (staprun) in SystemTap before 1.6 does not properly validate modules when a module path…EPSS 0.52%2.1CVE-2010-4171Systemtap improper input validation vulnerabilityThe staprun runtime tool in SystemTap 1.3 does not verify that a module to unload was previously loaded by SystemTap, which allows local users to cau…EPSS 0.40%

Source: NIST National Vulnerability Database (record CVE-2011-2503), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.