systemtap: signed module loading race condition
Published Jul 26, 2012
3.7
LOWCVSS 2.0
EPSS 0.44%
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
No data.
- ≤ 1.5
- 0.2.2
- 0.3
- 0.4
- 0.5
- 0.5.3
- 0.5.4
- 0.5.5
- 0.5.7
- 0.5.8
- 0.5.9
- 0.5.10
- 0.5.12
- 0.5.13
- 0.5.14
- 0.6
- 0.6.2
- 0.7
- 0.7.2
- 0.8
- 0.9
- 0.9.5
- 0.9.7
- 0.9.8
- 0.9.9
- 1.0
- 1.1
- 1.2
- 1.3
- 1.4
No data.
Red Hat Enterprise Linux 5
systemtap-0:1.3-9.el5
Fixed · RHSA-2011:1089
Red Hat Enterprise Linux 6
systemtap-0:1.4-6.el6_1.2
Fixed · RHSA-2011:1088
Red Hat Enterprise Linux 4
systemtap
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | systemtap-0:1.3-9.el5 | Fixed | RHSA-2011:1089 |
| Red Hat Enterprise Linux 6 | systemtap-0:1.4-6.el6_1.2 | Fixed | RHSA-2011:1088 |
| Red Hat Enterprise Linux 4 | systemtap | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:H/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.44% (0.00441) | 36.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.44% (0.00441) | 34.92th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00069) | 18.50th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
References (11)
- http://secunia.com/advisories/45377 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/46920 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git%3Ba=blob%3Bf=NEWS%3Bhb=304d73b1fea24af791f2a129fb141c5009eae6a8 x_refsource_CONFIRM
- http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git%3Ba=commitdiff%3Bh=ed51cfa24ca27746ab09b59280b94117dd58cba3 x_refsource_CONFIRM
- http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commitdiff;h=ed51cfa24ca27746ab09b59280b94117dd58cba3
- http://www.debian.org/security/2011/dsa-2348 vendor-advisoryx_refsource_DEBIAN
- https://access.redhat.com/security/cve/CVE-2011-2503 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=716489 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2503 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2011-2503
- https://www.cve.org/CVERecord?id=CVE-2011-2503
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/45377 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/46920 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git%3Ba=blob%3Bf=NEWS%3Bhb=304d73b1fea24af791f2a129fb141c5009eae6a8 | x_refsource_CONFIRM | |
| http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git%3Ba=commitdiff%3Bh=ed51cfa24ca27746ab09b59280b94117dd58cba3 | x_refsource_CONFIRM | |
| http://sources.redhat.com/git/gitweb.cgi?p=systemtap.git;a=commitdiff;h=ed51cfa24ca27746ab09b59280b94117dd58cba3 | ||
| http://www.debian.org/security/2011/dsa-2348 | vendor-advisoryx_refsource_DEBIAN | |
| https://access.redhat.com/security/cve/CVE-2011-2503 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=716489 | Issue Tracking | |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-2503 | x_refsource_MISC | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-2503 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-2503 |
Change history (0)
No recorded changes yet.