CVE-2011-2503

Severity: low (CVSS 3.7 v2.0)
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: 2012-07-26 · updated 2026-06-16
Weakness: CWE-20

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.

Affected products

Systemtap: through 1.5; 0.2.2, 0.3, 0.4, 0.5, 0.5.3, 0.5.4 (+23)

References

http://secunia.com/advisories/45377
http://secunia.com/advisories/46920
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
http://secunia.com/advisories/46920
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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