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Fencer Vulns
critical 9.8

CVE-2017-7895 in the critical feed json

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 re…

published 2017-04-28 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16866

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.8%
EPSS 10.8% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

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.

Patch / fix

  • linux linux_kernel 3.2.89, 3.16.44, 4.1.40, 4.4.67, 4.9.26, 4.10.14
  • linux Debian 14, Debian 13, Debian 12 4.9.25-1

debian advisories DEBIAN-CVE-2017-7895

  • linux Ubuntu 14.04 LTS 3.13.0-125.174
  • linux Ubuntu 16.04 LTS 4.4.0-79.100
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1018.27
  • linux-gke Ubuntu 16.04 LTS 4.4.0-1014.14
  • linux-hwe Ubuntu 16.04 LTS 4.10.0-32.36~16.04.1
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1057.64
  • linux-lts-xenial Ubuntu 14.04 LTS 4.4.0-79.100~14.04.1
  • linux-snapdragon Ubuntu 16.04 LTS 4.4.0-1059.63

ubuntu advisories UBUNTU-CVE-2017-7895

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt enterprise mrg 2 1:3.10.0-514.rt56.228.el6rt
  • kernel-rt-trace enterprise mrg 2 1:3.10.0-514.rt56.228.el6rt
  • kernel-rt-vanilla enterprise mrg 2 1:3.10.0-514.rt56.228.el6rt
  • kernel-rt-firmware enterprise mrg 2 1:3.10.0-514.rt56.228.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-514.rt56.228.el6rt
  • kernel-rt RHEL 7 EXTRAS_RT 3.10.0-514.26.1.rt56.442.el7
  • kernel-rt-kvm RHEL 7 EXTRAS_RT 3.10.0-514.26.1.rt56.442.el7
  • kernel-rt-trace RHEL 7 EXTRAS_RT 3.10.0-514.26.1.rt56.442.el7

red hat advisories RHSA-2017:2472RHSA-2017:2732RHSA-2017:2412RHSA-2017:2428RHSA-2017:1715RHSA-2017:2429

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-7895 updated cvss 6.5

kernel: NFSv3 server does not properly handle payload bounds checking of WRITE requests

  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-514.26.1.el7, kernel 3.10.0-514.26.1.el7, python-perf 3.10.0-514.26.1.el7, kernel-tools 3.10.0-514.26.1.el7, kernel-tools-libs 3.10.0-514.26.1.el7, kernel-abi-whitelists 3.10.0-514.26.1.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-514.26.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-514.26.1.el7, kernel 3.10.0-514.26.1.el7, python-perf 3.10.0-514.26.1.el7, kernel-tools 3.10.0-514.26.1.el7, kernel-tools-libs 3.10.0-514.26.1.el7, kernel-abi-whitelists 3.10.0-514.26.1.el7, +1 more
    fixed: vendor fix RHSA-2017:1615
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.2) perf 3.10.0-327.58.1.el7, kernel 3.10.0-327.58.1.el7, python-perf 3.10.0-327.58.1.el7, kernel-tools 3.10.0-327.58.1.el7, kernel-tools-libs 3.10.0-327.58.1.el7, kernel-abi-whitelists 3.10.0-327.58.1.el7, +1 more
    fixed: vendor fix RHSA-2017:1766
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-514.26.1.el7
    fixed: vendor fix RHSA-2017:1615
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2) kernel-debuginfo-common-x86_64 3.10.0-327.58.1.el7
    fixed: vendor fix RHSA-2017:1766
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-696.6.3.el6, kernel 2.6.32-696.6.3.el6, kernel-firmware 2.6.32-696.6.3.el6, kernel-abi-whitelists 2.6.32-696.6.3.el6, kernel-debuginfo-common-i686 2.6.32-696.6.3.el6, kernel-debuginfo-common-x86_64 2.6.32-696.6.3.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-696.6.3.el6, kernel-debuginfo-common-i686 2.6.32-696.6.3.el6, kernel-debuginfo-common-x86_64 2.6.32-696.6.3.el6
    fixed: vendor fix RHSA-2017:1723
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-514.26.1.rt56.442.el7, kernel-rt-kvm 3.10.0-514.26.1.rt56.442.el7, kernel-rt-trace 3.10.0-514.26.1.rt56.442.el7, kernel-rt-debug-kvm 3.10.0-514.26.1.rt56.442.el7, kernel-rt-trace-kvm 3.10.0-514.26.1.rt56.442.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-514.26.1.rt56.442.el7
    fixed: vendor fix RHSA-2017:1616
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-696.6.3.el6, kernel 2.6.32-696.6.3.el6, kernel-firmware 2.6.32-696.6.3.el6, kernel-abi-whitelists 2.6.32-696.6.3.el6, kernel-debuginfo-common-i686 2.6.32-696.6.3.el6, kernel-debuginfo-common-x86_64 2.6.32-696.6.3.el6
    fixed: vendor fix RHSA-2017:1723
  • Red Hat Enterprise Linux HPC Node EUS (v. 6.7) perf 2.6.32-573.45.1.el6, kernel 2.6.32-573.45.1.el6, kernel-firmware 2.6.32-573.45.1.el6, kernel-abi-whitelists 2.6.32-573.45.1.el6, kernel-debuginfo-common-i686 2.6.32-573.45.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.45.1.el6
    fixed: vendor fix RHSA-2017:2429
show 29 more
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-696.6.3.el6, kernel-debuginfo-common-x86_64 2.6.32-696.6.3.el6
    fixed: vendor fix RHSA-2017:1723
  • Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) python-perf 2.6.32-573.45.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.45.1.el6
    fixed: vendor fix RHSA-2017:2429
  • Red Hat Enterprise Linux Long Life (v. 5.9 server) kernel 2.6.18-348.34.1.el5, kernel-PAE 2.6.18-348.34.1.el5, kernel-xen 2.6.18-348.34.1.el5, kernel-debuginfo-common 2.6.18-348.34.1.el5
    fixed: vendor fix RHSA-2017:2472
  • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-514.26.1.rt56.442.el7, kernel-rt-trace 3.10.0-514.26.1.rt56.442.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-514.26.1.rt56.442.el7
    fixed: vendor fix RHSA-2017:1616
  • Red Hat Enterprise Linux Server (v. 5 ELS) kernel 2.6.18-422.el5, kernel-PAE 2.6.18-422.el5, kernel-xen 2.6.18-422.el5, kernel-kdump 2.6.18-422.el5, kernel-debuginfo-common 2.6.18-422.el5
    fixed: vendor fix RHSA-2017:2412
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-696.6.3.el6, kernel 2.6.32-696.6.3.el6, kernel-kdump 2.6.32-696.6.3.el6, kernel-firmware 2.6.32-696.6.3.el6, kernel-bootwrapper 2.6.32-696.6.3.el6, kernel-abi-whitelists 2.6.32-696.6.3.el6, +4 more
    fixed: vendor fix RHSA-2017:1723
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-514.26.1.el7, kernel 3.10.0-514.26.1.el7, python-perf 3.10.0-514.26.1.el7, kernel-kdump 3.10.0-514.26.1.el7, kernel-tools 3.10.0-514.26.1.el7, kernel-tools-libs 3.10.0-514.26.1.el7, +6 more
    fixed: vendor fix RHSA-2017:1615
  • Red Hat Enterprise Linux Server AUS (v. 6.2) perf 2.6.32-220.75.1.el6, kernel 2.6.32-220.75.1.el6, kernel-firmware 2.6.32-220.75.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.75.1.el6
    fixed: vendor fix RHSA-2017:2732
  • Red Hat Enterprise Linux Server AUS (v. 6.4) perf 2.6.32-358.81.1.el6, kernel 2.6.32-358.81.1.el6, kernel-firmware 2.6.32-358.81.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.81.1.el6
    fixed: vendor fix RHSA-2017:1715
  • Red Hat Enterprise Linux Server AUS (v. 6.5) perf 2.6.32-431.82.1.el6, kernel 2.6.32-431.82.1.el6, kernel-firmware 2.6.32-431.82.1.el6, kernel-abi-whitelists 2.6.32-431.82.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.82.1.el6
    fixed: vendor fix RHSA-2017:2428
  • Red Hat Enterprise Linux Server AUS (v. 6.6) perf 2.6.32-504.62.1.el6, kernel 2.6.32-504.62.1.el6, kernel-firmware 2.6.32-504.62.1.el6, kernel-abi-whitelists 2.6.32-504.62.1.el6, kernel-debuginfo-common-x86_64 2.6.32-504.62.1.el6
    fixed: vendor fix RHSA-2017:1798
  • Red Hat Enterprise Linux Server EUS (v. 6.7) perf 2.6.32-573.45.1.el6, kernel 2.6.32-573.45.1.el6, kernel-kdump 2.6.32-573.45.1.el6, kernel-firmware 2.6.32-573.45.1.el6, kernel-bootwrapper 2.6.32-573.45.1.el6, kernel-abi-whitelists 2.6.32-573.45.1.el6, +4 more
    fixed: vendor fix RHSA-2017:2429
  • Red Hat Enterprise Linux Server EUS (v. 7.2) perf 3.10.0-327.58.1.el7, kernel 3.10.0-327.58.1.el7, python-perf 3.10.0-327.58.1.el7, kernel-kdump 3.10.0-327.58.1.el7, kernel-tools 3.10.0-327.58.1.el7, kernel-tools-libs 3.10.0-327.58.1.el7, +6 more
    fixed: vendor fix RHSA-2017:1766
  • Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-696.6.3.el6, kernel-debuginfo-common-i686 2.6.32-696.6.3.el6, kernel-debuginfo-common-ppc64 2.6.32-696.6.3.el6, kernel-debuginfo-common-s390x 2.6.32-696.6.3.el6, kernel-debuginfo-common-x86_64 2.6.32-696.6.3.el6
    fixed: vendor fix RHSA-2017:1723
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-514.26.1.el7, kernel-debuginfo-common-x86_64 3.10.0-514.26.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-514.26.1.el7
    fixed: vendor fix RHSA-2017:1615
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.2) kernel 2.6.32-220.75.1.el6, python-perf 2.6.32-220.75.1.el6, kernel-debuginfo-common-x86_64 2.6.32-220.75.1.el6
    fixed: vendor fix RHSA-2017:2732
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.4) kernel 2.6.32-358.81.1.el6, python-perf 2.6.32-358.81.1.el6, kernel-debuginfo-common-x86_64 2.6.32-358.81.1.el6
    fixed: vendor fix RHSA-2017:1715
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.5) kernel 2.6.32-431.82.1.el6, python-perf 2.6.32-431.82.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.82.1.el6
    fixed: vendor fix RHSA-2017:2428
  • Red Hat Enterprise Linux Server Optional AUS (v. 6.6) python-perf 2.6.32-504.62.1.el6, kernel-debuginfo-common-x86_64 2.6.32-504.62.1.el6
    fixed: vendor fix RHSA-2017:1798
  • Red Hat Enterprise Linux Server Optional EUS (v. 6.7) python-perf 2.6.32-573.45.1.el6, kernel-debuginfo-common-i686 2.6.32-573.45.1.el6, kernel-debuginfo-common-ppc64 2.6.32-573.45.1.el6, kernel-debuginfo-common-s390x 2.6.32-573.45.1.el6, kernel-debuginfo-common-x86_64 2.6.32-573.45.1.el6
    fixed: vendor fix RHSA-2017:2429
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.2) kernel-debuginfo-common-ppc64 3.10.0-327.58.1.el7, kernel-debuginfo-common-x86_64 3.10.0-327.58.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-327.58.1.el7
    fixed: vendor fix RHSA-2017:1766
  • Red Hat Enterprise Linux Server Optional TUS (v. 6.5) kernel 2.6.32-431.82.1.el6, python-perf 2.6.32-431.82.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.82.1.el6
    fixed: vendor fix RHSA-2017:2428
  • Red Hat Enterprise Linux Server Optional TUS (v. 6.6) python-perf 2.6.32-504.62.1.el6, kernel-debuginfo-common-x86_64 2.6.32-504.62.1.el6
    fixed: vendor fix RHSA-2017:1798
  • Red Hat Enterprise Linux Server TUS (v. 6.5) perf 2.6.32-431.82.1.el6, kernel 2.6.32-431.82.1.el6, kernel-firmware 2.6.32-431.82.1.el6, kernel-abi-whitelists 2.6.32-431.82.1.el6, kernel-debuginfo-common-x86_64 2.6.32-431.82.1.el6
    fixed: vendor fix RHSA-2017:2428
  • Red Hat Enterprise Linux Server TUS (v. 6.6) perf 2.6.32-504.62.1.el6, kernel 2.6.32-504.62.1.el6, kernel-firmware 2.6.32-504.62.1.el6, kernel-abi-whitelists 2.6.32-504.62.1.el6, kernel-debuginfo-common-x86_64 2.6.32-504.62.1.el6
    fixed: vendor fix RHSA-2017:1798
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-696.6.3.el6, kernel 2.6.32-696.6.3.el6, kernel-firmware 2.6.32-696.6.3.el6, kernel-abi-whitelists 2.6.32-696.6.3.el6, kernel-debuginfo-common-i686 2.6.32-696.6.3.el6, kernel-debuginfo-common-x86_64 2.6.32-696.6.3.el6
    fixed: vendor fix RHSA-2017:1723
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-514.26.1.el7, kernel 3.10.0-514.26.1.el7, python-perf 3.10.0-514.26.1.el7, kernel-tools 3.10.0-514.26.1.el7, kernel-tools-libs 3.10.0-514.26.1.el7, kernel-abi-whitelists 3.10.0-514.26.1.el7, +1 more
    fixed: vendor fix RHSA-2017:1615
  • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-696.6.3.el6, kernel-debuginfo-common-i686 2.6.32-696.6.3.el6, kernel-debuginfo-common-x86_64 2.6.32-696.6.3.el6
    fixed: vendor fix RHSA-2017:1723
  • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-514.26.1.el7
    fixed: vendor fix RHSA-2017:1615

1 more fixed in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

10.81% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.