kernel: O_EXCL creates on NFSv4 are broken
Published Sep 22, 2009
4.6
MEDIUMCVSS 2.0
EPSS 0.47%
Description
NFSv4 in the Linux kernel 2.6.18, and possibly other versions, does not properly clean up an inode when an O_EXCL create fails, which causes files to be created with insecure settings such as setuid bits, and possibly allows local users to gain privileges, related to the execution of the do_open_permission function even when a create fails.
Affected products
No data.
- 2.6.18
No data.
Red Hat Enterprise Linux 5
kernel-0:2.6.18-164.6.1.el5
Fixed · RHSA-2009:1548
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-164.6.1.el5 | Fixed | RHSA-2009:1548 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and 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:L/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 | 0.47% (0.00468) | 38.22th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.47% (0.00468) | 36.69th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00095) | 24.46th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.27th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.34th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.15th | v2 (v2022.01.01) |
References (16)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=81ac95c5 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.html vendor-advisoryx_refsource_SUSE
- http://lists.vmware.com/pipermail/security-announce/2010/000082.html mailing-listx_refsource_MLIST
- http://secunia.com/advisories/37105 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/38794 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/38834 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.openwall.com/lists/oss-security/2009/09/21/2 mailing-listx_refsource_MLIST
- http://www.ubuntu.com/usn/USN-852-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2010/0528 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2009-3286 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=524520 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-3286
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7527 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9757 vdb-entrysignaturex_refsource_OVAL
- https://rhn.redhat.com/errata/RHSA-2009-1548.html vendor-advisoryx_refsource_REDHAT
- https://www.cve.org/CVERecord?id=CVE-2009-3286
Change history (0)
No recorded changes yet.