Niels Provos Systrace 1.6f and earlier on the x86_64 Linux platform allows local users to bypass intended access restrictions by making a 32-bit syscall with a syscall number that corresponds to a policy-compliant 64-bit syscall, related to race conditions that occur in monitoring 64-bit processes
Published Jan 29, 2009
7.2
HIGHCVSS 2.0
EPSS 0.82%
Description
Niels Provos Systrace 1.6f and earlier on the x86_64 Linux platform allows local users to bypass intended access restrictions by making a 32-bit syscall with a syscall number that corresponds to a policy-compliant 64-bit syscall, related to race conditions that occur in monitoring 64-bit processes.
Affected products
No data.
- ≤ 1.6e
- 1.1
- 1.2
- 1.3
- 1.4
- 1.5
- 1.6
- 1.6a
- 1.6b
- 1.6c
- 1.6d
Running on/with
- _nil_
No data.
No Red Hat product state for this CVE.
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:L/Au:N/C:C/I:C/A:C
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 3, 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 3, 2026 | 0.82% (0.00816) | 55.61th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.82% (0.00816) | 52.13th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00104) | 26.03th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 0.34th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 0.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.76% (0.01761) | 76.53th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.76% (0.01761) | 76.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.76% (0.01761) | 74.44th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.76% (0.01761) | 53.69th | v2 (v2022.01.01) |
References (5)
- http://scary.beasts.org/security/CESA-2009-001.html x_refsource_MISCExploit
- http://scarybeastsecurity.blogspot.com/2009/01/bypassing-syscall-filtering.html x_refsource_MISC
- http://www.citi.umich.edu/u/provos/systrace/ x_refsource_MISC
- http://www.securityfocus.com/archive/1/500377/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/33417 vdb-entryx_refsource_BIDExploit
| Link | Providers | Tags |
|---|---|---|
| http://scary.beasts.org/security/CESA-2009-001.html | x_refsource_MISCExploit | |
| http://scarybeastsecurity.blogspot.com/2009/01/bypassing-syscall-filtering.html | x_refsource_MISC | |
| http://www.citi.umich.edu/u/provos/systrace/ | x_refsource_MISC | |
| http://www.securityfocus.com/archive/1/500377/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/33417 | vdb-entryx_refsource_BIDExploit |
Change history (0)
No recorded changes yet.