kernel: nfs: data leak during extended writes
Published Feb 28, 2014
2.1
LOWCVSS 2.0
EPSS 0.41%
Description
The nfs_can_extend_write function in fs/nfs/write.c in the Linux kernel before 3.13.3 relies on a write delegation to extend a write operation without a certain up-to-date verification, which allows local users to obtain sensitive information from kernel memory in opportunistic circumstances by writing to a file in an NFS filesystem and then reading the same file.
Affected products
No data.
Configuration 1
- < 3.13.3
Configuration 2
- 12.04
- 13.10
No data.
Red Hat Enterprise Linux 6
kernel-0:2.6.32-431.11.2.el6
Fixed · RHSA-2014:0328
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-431.11.2.el6 | Fixed | RHSA-2014:0328 |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.
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:N/A:N
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.41% (0.00411) | 32.87th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.41% (0.00411) | 32.50th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.07% (0.00074) | 19.94th | 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) |
| Feb 13, 2023 | 1.03% (0.01034) | 41.16th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.28% (0.01282) | 67.60th | 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 (10)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=263b4509ec4d47e0da3e753f85a39ea12d1eff24 x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.3 x_refsource_CONFIRMRelease NotesVendor Advisory
- http://www.openwall.com/lists/oss-security/2014/02/20/16 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.ubuntu.com/usn/USN-2137-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.ubuntu.com/usn/USN-2140-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2014-2038 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1066939 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/263b4509ec4d47e0da3e753f85a39ea12d1eff24 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2014-2038
- https://www.cve.org/CVERecord?id=CVE-2014-2038
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=263b4509ec4d47e0da3e753f85a39ea12d1eff24 | x_refsource_CONFIRM | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.3 | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| http://www.openwall.com/lists/oss-security/2014/02/20/16 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.ubuntu.com/usn/USN-2137-1 | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| http://www.ubuntu.com/usn/USN-2140-1 | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2014-2038 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1066939 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://github.com/torvalds/linux/commit/263b4509ec4d47e0da3e753f85a39ea12d1eff24 | x_refsource_CONFIRMPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-2038 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-2038 |
Change history (0)
No recorded changes yet.