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CVE-2011-2503

16
FAUCET Score

CVE-2011-2503 describes a race condition vulnerability in the insert_module function of the SystemTap runtime tool (staprun) in versions prior to 1.6. This flaw allows local users to gain privileges by manipulating the module loading process between signature validation and initialization. The vulnerability has a CVSS score of 3.7 (low severity), indicating a local attack vector with high attack complexity, potentially leading to partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5CPE matchmatch criteria
cpe:2.3:a:systemtap:systemtap:*:*:*:*:*:*:*:*
0.2.2CPE matchmatch criteria
cpe:2.3:a:systemtap:systemtap:0.2.2:*:*:*:*:*:*:*
0.3CPE matchmatch criteria
cpe:2.3:a:systemtap:systemtap:0.3:*:*:*:*:*:*:*
0.4CPE matchmatch criteria
cpe:2.3:a:systemtap:systemtap:0.4:*:*:*:*:*:*:*
0.5CPE matchmatch criteria
cpe:2.3:a:systemtap:systemtap:0.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

3.7LOW

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
1.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 82nd percentile among its peer group of 747 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: systemtap-0:1.3-9.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: systemtap-0:1.4-6.el6_1.2
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: systemtap

Vendor Advisories (1)

redhatCVE-2011-2503Moderate

systemtap: signed module loading race condition

Jul 25, 2011

References

bugzilla.redhat.com / show_bug.cgi
secunia.com / advisories/45377
Vendor Advisory
secunia.com / advisories/46920
Vendor Advisory
sources.redhat.com / git/gitweb.cgi
sources.redhat.com / git/gitweb.cgi
debian.org / security/2011/dsa-2348