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Fencer Vulns
medium 5.5

CVE-2017-2618 json

A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10.

published 2018-07-27 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-11779

cvss
5.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty (null) write to this file can crash the system by causing the system to attempt to access unmapped kernel memory.

Patch / fix

  • linux linux_kernel 4.9.10
  • linux Debian 14, Debian 13, Debian 12 4.9.10-1

debian advisories DEBIAN-CVE-2017-2618

  • linux Ubuntu 14.04 LTS 3.13.0-126.175
  • linux Ubuntu 16.04 LTS 4.4.0-67.88
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1009.18
  • linux-hwe Ubuntu 16.04 LTS 4.10.0-32.36~16.04.1
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1048.55
  • linux-lts-xenial Ubuntu 14.04 LTS 4.4.0-67.88~14.04.1
  • linux-snapdragon Ubuntu 16.04 LTS 4.4.0-1051.55

ubuntu advisories UBUNTU-CVE-2017-2618

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 RHEL 7 EXTRAS_RT 3.10.0-514.16.1.rt56.437.el7
  • kernel-rt-kvm RHEL 7 EXTRAS_RT 3.10.0-514.16.1.rt56.437.el7
  • kernel-rt-trace RHEL 7 EXTRAS_RT 3.10.0-514.16.1.rt56.437.el7
  • kernel-rt-debug-kvm RHEL 7 EXTRAS_RT 3.10.0-514.16.1.rt56.437.el7
  • kernel-rt-trace-kvm RHEL 7 EXTRAS_RT 3.10.0-514.16.1.rt56.437.el7
  • kernel-rt-debuginfo-common-x86_64 RHEL 7 EXTRAS_RT 3.10.0-514.16.1.rt56.437.el7
  • kernel-rt enterprise mrg 2 1:3.10.0-514.rt56.219.el6rt
  • kernel-rt-trace enterprise mrg 2 1:3.10.0-514.rt56.219.el6rt

red hat advisories RHSA-2017:0931RHSA-2017:0932RHSA-2017:0933

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-2017-2618 updated cvss 5.5

kernel: Off-by-one error in selinux_setprocattr (/proc/self/attr/fscreate)

  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-514.16.1.el7, kernel 3.10.0-514.16.1.el7, python-perf 3.10.0-514.16.1.el7, kernel-tools 3.10.0-514.16.1.el7, kernel-tools-libs 3.10.0-514.16.1.el7, kernel-abi-whitelists 3.10.0-514.16.1.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-514.16.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-514.16.1.el7, kernel 3.10.0-514.16.1.el7, python-perf 3.10.0-514.16.1.el7, kernel-tools 3.10.0-514.16.1.el7, kernel-tools-libs 3.10.0-514.16.1.el7, kernel-abi-whitelists 3.10.0-514.16.1.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-514.16.1.el7
    fixed: vendor fix RHSA-2017:0933
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-514.16.1.rt56.437.el7, kernel-rt-kvm 3.10.0-514.16.1.rt56.437.el7, kernel-rt-trace 3.10.0-514.16.1.rt56.437.el7, kernel-rt-debug-kvm 3.10.0-514.16.1.rt56.437.el7, kernel-rt-trace-kvm 3.10.0-514.16.1.rt56.437.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-514.16.1.rt56.437.el7 Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-514.16.1.rt56.437.el7, kernel-rt-trace 3.10.0-514.16.1.rt56.437.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-514.16.1.rt56.437.el7
    fixed: vendor fix RHSA-2017:0931
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-514.16.1.el7, kernel 3.10.0-514.16.1.el7, python-perf 3.10.0-514.16.1.el7, kernel-kdump 3.10.0-514.16.1.el7, kernel-tools 3.10.0-514.16.1.el7, kernel-tools-libs 3.10.0-514.16.1.el7, +6 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-514.16.1.el7, kernel-debuginfo-common-x86_64 3.10.0-514.16.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-514.16.1.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-514.16.1.el7, kernel 3.10.0-514.16.1.el7, python-perf 3.10.0-514.16.1.el7, kernel-tools 3.10.0-514.16.1.el7, kernel-tools-libs 3.10.0-514.16.1.el7, kernel-abi-whitelists 3.10.0-514.16.1.el7, +1 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-514.16.1.el7
    fixed: vendor fix RHSA-2017:0933
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-514.rt56.219.el6rt, kernel-rt-trace 3.10.0-514.rt56.219.el6rt, kernel-rt-vanilla 3.10.0-514.rt56.219.el6rt, kernel-rt-firmware 3.10.0-514.rt56.219.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-514.rt56.219.el6rt
    fixed: vendor fix RHSA-2017:0932
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    not affected: vulnerable code not present

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

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • Linux kernel

Classification

Weakness
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.