Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object
Published May 5, 2009
6.9
MEDIUMCVSS 2.0
EPSS 0.49%
Description
Race condition in the ptrace_attach function in kernel/ptrace.c in the Linux kernel before 2.6.30-rc4 allows local users to gain privileges via a PTRACE_ATTACH ptrace call during an exec system call that is launching a setuid application, related to locking an incorrect cred_exec_mutex object.
Affected products
No data.
- ≤ 2.6.29
- 2.6.30
- 2.6.30
- 2.6.30
- 2.6.30
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2.1, 3, 4, 5, or Red Hat Enterprise MRG.
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:M/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 4, 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 4, 2026 | 0.49% (0.00492) | 40.11th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.49% (0.00492) | 38.17th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.06% (0.00061) | 16.31th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00043) | 11.62th | v3 (v2023.03.01) |
| Jun 7, 2024 | 0.04% (0.00043) | 9.62th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00043) | 7.62th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.22% (0.03220) | 84.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.22% (0.03220) | 82.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.22% (0.03220) | 65.30th | v2 (v2022.01.01) |
References (14)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=cad81bc2529ab8c62b6fdc83a1c0c7f4a87209eb x_refsource_CONFIRM
- http://secunia.com/advisories/34977 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/35120 third-party-advisoryx_refsource_SECUNIABroken Link
- http://wiki.rpath.com/Advisories:rPSA-2009-0084 x_refsource_CONFIRMBroken Link
- http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.30-rc4 x_refsource_CONFIRMBroken Link
- http://www.openwall.com/lists/oss-security/2009/05/04/2 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.osvdb.org/54188 vdb-entryx_refsource_OSVDBBroken Link
- http://www.securityfocus.com/archive/1/503610/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/34799 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.vupen.com/english/advisories/2009/1236 vdb-entryx_refsource_VUPENNot Applicable
- https://access.redhat.com/security/cve/CVE-2009-1527 Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/50293 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2009-1527
- https://www.cve.org/CVERecord?id=CVE-2009-1527
Change history (0)
No recorded changes yet.