kernel: NFSv3 server does not properly handle payload bounds checking of WRITE requests
Published Apr 28, 2017
9.8
CRITICALCVSS 3.1
EPSS 10.81%
Description
The NFSv2 and NFSv3 server implementations in the Linux kernel through 4.10.13 lack certain checks for the end of a buffer, which allows remote attackers to trigger pointer-arithmetic errors or possibly have unspecified other impact via crafted requests, related to fs/nfsd/nfs3xdr.c and fs/nfsd/nfsxdr.c.
Affected products
No data.
Configuration 1
- < 3.2.89
- ≥ 3.3 · < 3.16.44
- ≥ 3.17.0 · < 4.1.40
- ≥ 4.2 · < 4.4.67
- ≥ 4.5.0 · < 4.9.26
- ≥ 4.10 · < 4.10.14
Configuration 2
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 5 Extended Lifecycle Support
kernel-0:2.6.18-422.el5
Fixed · RHSA-2017:2412
Red Hat Enterprise Linux 5.9 Long Life
kernel-0:2.6.18-348.34.1.el5
Fixed · RHSA-2017:2472
Red Hat Enterprise Linux 6
kernel-0:2.6.32-696.6.3.el6
Fixed · RHSA-2017:1723
Red Hat Enterprise Linux 6.2 Advanced Update Support
kernel-0:2.6.32-220.75.1.el6
Fixed · RHSA-2017:2732
Red Hat Enterprise Linux 6.4 Advanced Update Support
kernel-0:2.6.32-358.81.1.el6
Fixed · RHSA-2017:1715
Red Hat Enterprise Linux 6.5 Advanced Update Support
kernel-0:2.6.32-431.82.1.el6
Fixed · RHSA-2017:2428
Red Hat Enterprise Linux 6.5 Telco Extended Update Support
kernel-0:2.6.32-431.82.1.el6
Fixed · RHSA-2017:2428
Red Hat Enterprise Linux 6.6 Advanced Update Support
kernel-0:2.6.32-504.62.1.el6
Fixed · RHSA-2017:1798
Red Hat Enterprise Linux 6.6 Telco Extended Update Support
kernel-0:2.6.32-504.62.1.el6
Fixed · RHSA-2017:1798
Red Hat Enterprise Linux 6.7 Extended Update Support
kernel-0:2.6.32-573.45.1.el6
Fixed · RHSA-2017:2429
Red Hat Enterprise Linux 7
kernel-0:3.10.0-514.26.1.el7
Fixed · RHSA-2017:1615
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-514.26.1.rt56.442.el7
Fixed · RHSA-2017:1616
Red Hat Enterprise Linux 7.2 Extended Update Support
kernel-0:3.10.0-327.58.1.el7
Fixed · RHSA-2017:1766
Red Hat Enterprise MRG 2
kernel-rt-1:3.10.0-514.rt56.228.el6rt
Fixed · RHSA-2017:1647
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 Extended Lifecycle Support | kernel-0:2.6.18-422.el5 | Fixed | RHSA-2017:2412 |
| Red Hat Enterprise Linux 5.9 Long Life | kernel-0:2.6.18-348.34.1.el5 | Fixed | RHSA-2017:2472 |
| Red Hat Enterprise Linux 6 | kernel-0:2.6.32-696.6.3.el6 | Fixed | RHSA-2017:1723 |
| Red Hat Enterprise Linux 6.2 Advanced Update Support | kernel-0:2.6.32-220.75.1.el6 | Fixed | RHSA-2017:2732 |
| Red Hat Enterprise Linux 6.4 Advanced Update Support | kernel-0:2.6.32-358.81.1.el6 | Fixed | RHSA-2017:1715 |
| Red Hat Enterprise Linux 6.5 Advanced Update Support | kernel-0:2.6.32-431.82.1.el6 | Fixed | RHSA-2017:2428 |
| Red Hat Enterprise Linux 6.5 Telco Extended Update Support | kernel-0:2.6.32-431.82.1.el6 | Fixed | RHSA-2017:2428 |
| Red Hat Enterprise Linux 6.6 Advanced Update Support | kernel-0:2.6.32-504.62.1.el6 | Fixed | RHSA-2017:1798 |
| Red Hat Enterprise Linux 6.6 Telco Extended Update Support | kernel-0:2.6.32-504.62.1.el6 | Fixed | RHSA-2017:1798 |
| Red Hat Enterprise Linux 6.7 Extended Update Support | kernel-0:2.6.32-573.45.1.el6 | Fixed | RHSA-2017:2429 |
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-514.26.1.el7 | Fixed | RHSA-2017:1615 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-514.26.1.rt56.442.el7 | Fixed | RHSA-2017:1616 |
| Red Hat Enterprise Linux 7.2 Extended Update Support | kernel-0:3.10.0-327.58.1.el7 | Fixed | RHSA-2017:1766 |
| Red Hat Enterprise MRG 2 | kernel-rt-1:3.10.0-514.rt56.228.el6rt | Fixed | RHSA-2017:1647 |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2 may address this issue.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
AV:N/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 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.81% (0.10810) | 95.72th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.81% (0.10810) | 95.27th | v5 (v2026.06.15) |
| Jan 20, 2026 | 21.52% (0.21519) | 95.54th | v4 (v2025.03.14) |
| Jan 4, 2026 | 17.42% (0.17417) | 94.84th | v4 (v2025.03.14) |
| Dec 14, 2025 | 21.52% (0.21519) | 95.51th | v4 (v2025.03.14) |
| Nov 21, 2025 | 25.45% (0.25451) | 95.99th | v4 (v2025.03.14) |
| Nov 18, 2025 | 45.26% (0.45261) | 97.45th | v4 (v2025.03.14) |
| Jul 19, 2025 | 25.45% (0.25451) | 95.96th | v4 (v2025.03.14) |
| Apr 24, 2025 | 31.16% (0.31155) | 96.45th | v4 (v2025.03.14) |
| Mar 30, 2025 | 26.97% (0.26974) | 95.94th | v4 (v2025.03.14) |
| Mar 29, 2025 | 19.88% (0.19881) | 92.59th | v4 (v2025.03.14) |
| Mar 17, 2025 | 26.97% (0.26974) | 95.95th | v4 (v2025.03.14) |
| Dec 17, 2024 | 88.13% (0.88132) | 98.92th | v3 (v2023.03.01) |
| Aug 2, 2023 | 90.47% (0.90467) | 98.38th | v3 (v2023.03.01) |
| Jun 24, 2023 | 91.98% (0.91977) | 98.47th | v3 (v2023.03.01) |
| May 8, 2023 | 92.26% (0.92257) | 98.44th | v3 (v2023.03.01) |
| Mar 7, 2023 | 92.11% (0.92105) | 98.35th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
| Feb 3, 2022 | 4.34% (0.04341) | 74.67th | v1 |
| Jan 6, 2022 | 4.34% (0.04341) | 74.46th | v1 |
| Sep 1, 2021 | 4.34% (0.04341) | 83.56th | v1 |
| Apr 14, 2021 | 4.34% (0.04341) | 0.00th | v1 |
References (20)
- http://www.debian.org/security/2017/dsa-3886 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.securityfocus.com/bid/98085 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1615 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1616 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1647 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1715 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1723 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1766 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1798 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2412 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2428 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2429 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2472 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2732 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-7895 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1446103 Issue Tracking
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=13bf9fbff0e5e099e2b6f003a0ab8ae145436309 x_refsource_CONFIRMPatchThird Party Advisory
- https://github.com/torvalds/linux/commit/13bf9fbff0e5e099e2b6f003a0ab8ae145436309 x_refsource_CONFIRMPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-7895
- https://www.cve.org/CVERecord?id=CVE-2017-7895
Change history (0)
No recorded changes yet.