MEDIUM
kernel: nfs: fix NFS v4 client handling of MAY_EXEC in nfs_permission
Published May 14, 2009
4.4
MEDIUMCVSS 2.0
EPSS 0.48%
Description
The nfs_permission function in fs/nfs/dir.c in the NFS client implementation in the Linux kernel 2.6.29.3 and earlier, when atomic_open is available, does not check execute (aka EXEC or MAY_EXEC) permission bits, which allows local users to bypass permissions and execute files, as demonstrated by files on an NFSv4 fileserver.
Affected products
No data.
Configuration 1
- ≤ 2.6.29.3
Configuration 3
OR
- 4.0
- 5.0
Configuration 4
OR
- 6.06
- 8.04
- 8.10
- 9.04
No data.
MRG for RHEL-5
kernel-rt-0:2.6.24.7-126.el5rt
Fixed · RHSA-2009:1157
Red Hat Enterprise Linux 4
kernel-0:2.6.9-89.0.3.EL
Fixed · RHSA-2009:1132
Red Hat Enterprise Linux 5
kernel-0:2.6.18-128.1.14.el5
Fixed · RHSA-2009:1106
| Product | Package | State | Advisory |
|---|---|---|---|
| MRG for RHEL-5 | kernel-rt-0:2.6.24.7-126.el5rt | Fixed | RHSA-2009:1157 |
| Red Hat Enterprise Linux 4 | kernel-0:2.6.9-89.0.3.EL | Fixed | RHSA-2009:1132 |
| Red Hat Enterprise Linux 5 | kernel-0:2.6.18-128.1.14.el5 | Fixed | RHSA-2009:1106 |
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 2.1, and 3.
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.
4.4 MEDIUM NVD
AV:L/AC:M/Au:N/C:P/I:P/A:P
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
0.48% 0.00485
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.00485
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.48% (0.00485) | 39.57th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.48% (0.00485) | 37.75th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.11% (0.00109) | 26.86th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.05% (0.00053) | 23.33th | v3 (v2023.03.01) |
| Jun 12, 2024 | 0.05% (0.00053) | 21.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00053) | 19.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
Weaknesses (1)
References (35)
- http://article.gmane.org/gmane.linux.nfs/26592 mailing-listx_refsource_MLISTExploit
- http://bugzilla.linux-nfs.org/show_bug.cgi?id=131 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- http://linux-nfs.org/pipermail/nfsv4/2006-November/005313.html mailing-listx_refsource_MLISTBroken Link
- http://linux-nfs.org/pipermail/nfsv4/2006-November/005323.html mailing-listx_refsource_MLISTBroken Link
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00004.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://secunia.com/advisories/35106 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/35298 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/35394 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/35656 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/35847 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/36051 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/36327 third-party-advisoryx_refsource_SECUNIABroken Link
- http://secunia.com/advisories/37471 third-party-advisoryx_refsource_SECUNIABroken Link
- http://wiki.rpath.com/Advisories:rPSA-2009-0111 x_refsource_CONFIRMBroken Link
- http://www.debian.org/security/2009/dsa-1809 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.debian.org/security/2009/dsa-1844 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.debian.org/security/2009/dsa-1865 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:135 vendor-advisoryx_refsource_MANDRIVABroken Link
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:148 vendor-advisoryx_refsource_MANDRIVABroken Link
- http://www.openwall.com/lists/oss-security/2009/05/13/2 mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2009-1157.html vendor-advisoryx_refsource_REDHATBroken Link
- http://www.securityfocus.com/archive/1/505254/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/archive/1/507985/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/34934 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/usn-793-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html x_refsource_CONFIRMPatchThird Party Advisory
- http://www.vupen.com/english/advisories/2009/1331 vdb-entryx_refsource_VUPENBroken Link
- http://www.vupen.com/english/advisories/2009/3316 vdb-entryx_refsource_VUPENBroken Link
- https://access.redhat.com/security/cve/CVE-2009-1630 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=500297 x_refsource_CONFIRMExploitIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2009-1630
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8543 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9990 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2009-1630
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published May 14, 2009
Updated Aug 7, 2024
Reserved May 14, 2009
Link CVE-2009-1630
CISA Vulnrichment
Updated n/a