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Fencer Vulns
high 7.0

CVE-2017-10661 in the critical feed json

Race condition in fs/timerfd.c in the Linux kernel before 4.10.15 allows local users to gain privileges or cause a denial of service (list…

published 2017-08-19 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-2308

cvss
7.0
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
13.5%
EPSS 13.5% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

Race condition in fs/timerfd.c in the Linux kernel before 4.10.15 allows local users to gain privileges or cause a denial of service (list corruption or use-after-free) via simultaneous file-descriptor operations that leverage improper might_cancel queueing.

Patch / fix

  • linux linux_kernel 3.2.92, 3.16.47, 3.18.52, 4.1.41, 4.4.67, 4.9.27, 4.10.15
  • linux Debian 14, Debian 13, Debian 12 4.9.30-1

debian advisories DEBIAN-CVE-2017-10661

  • linux Ubuntu 14.04 LTS 3.13.0-135.184
  • 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-2017-10661

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 1:3.10.0-693.61.1.rt56.656.el6rt
  • kernel-rt-trace enterprise mrg 2 1:3.10.0-693.61.1.rt56.656.el6rt
  • kernel-rt-vanilla enterprise mrg 2 1:3.10.0-693.61.1.rt56.656.el6rt
  • kernel-rt-firmware enterprise mrg 2 1:3.10.0-693.61.1.rt56.656.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-693.61.1.rt56.656.el6rt
  • kernel-rt RHEL 7 EXTRAS_RT 3.10.0-957.rt56.910.el7
  • kernel-rt-kvm RHEL 7 EXTRAS_RT 3.10.0-957.rt56.910.el7
  • kernel-rt-trace RHEL 7 EXTRAS_RT 3.10.0-957.rt56.910.el7

red hat advisories RHSA-2019:4058RHSA-2020:0036RHSA-2019:4057RHSA-2018:3096RHSA-2018:3083

  • kernel-ec2 SLES for SAP 11 SP4, SLES 11 SP4 3.0.101-108.18.1
  • kernel-pae SLES for SAP 11 SP4, SLES 11 SP4 3.0.101-108.18.1
  • kernel-xen SLES for SAP 11 SP4, SLES 11 SP4 3.0.101-108.18.1
  • kernel-syms SLES for SAP 11 SP4, SLES 11 SP4 3.0.101-108.18.1
  • kernel-ppc64 SLES for SAP 11 SP4, SLES 11 SP4 3.0.101-108.18.1
  • kernel-trace SLES for SAP 11 SP4, SLES 11 SP4 3.0.101-108.18.1
  • kernel-bigmem SLES for SAP 11 SP4, SLES 11 SP4 3.0.101-108.18.1
  • kernel-source SLES for SAP 11 SP4, SLES 11 SP4 3.0.101-108.18.1

suse advisories SUSE-SU-2017:3340-1SUSE-SU-2017:3337-1SUSE-SU-2017:3336-1SUSE-SU-2017:3332-1SUSE-SU-2017:3323-1SUSE-SU-2017:3318-1

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-2017-10661 updated cvss 5.3

kernel: Handling of might_cancel queueing is not properly pretected against race

  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    affected: no fix available
  • Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-957.el7, kernel 3.10.0-957.el7, bpftool 3.10.0-957.el7, python-perf 3.10.0-957.el7, kernel-tools 3.10.0-957.el7, kernel-tools-libs 3.10.0-957.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-957.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-957.el7, kernel 3.10.0-957.el7, bpftool 3.10.0-957.el7, python-perf 3.10.0-957.el7, kernel-tools 3.10.0-957.el7, kernel-tools-libs 3.10.0-957.el7, +2 more
    fixed: vendor fix RHSA-2018:3083
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) perf 3.10.0-862.46.1.el7, kernel 3.10.0-862.46.1.el7, python-perf 3.10.0-862.46.1.el7, kernel-tools 3.10.0-862.46.1.el7, kernel-tools-libs 3.10.0-862.46.1.el7, kernel-abi-whitelists 3.10.0-862.46.1.el7, +1 more
    fixed: vendor fix RHSA-2020:0036
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-957.el7
    fixed: vendor fix RHSA-2018:3083
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) kernel-debuginfo-common-x86_64 3.10.0-862.46.1.el7
    fixed: vendor fix RHSA-2020:0036
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 3.10.0-957.el7, kernel 3.10.0-957.el7, python-perf 3.10.0-957.el7, kernel-kdump 3.10.0-957.el7, kernel-tools 3.10.0-957.el7, kernel-tools-libs 3.10.0-957.el7, +4 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 3.10.0-957.el7
    fixed: vendor fix RHSA-2018:3083
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-957.rt56.910.el7, kernel-rt-trace 3.10.0-957.rt56.910.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-957.rt56.910.el7, kernel-rt-kvm 3.10.0-957.rt56.910.el7, kernel-rt-trace 3.10.0-957.rt56.910.el7, kernel-rt-debug-kvm 3.10.0-957.rt56.910.el7, kernel-rt-trace-kvm 3.10.0-957.rt56.910.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-957.rt56.910.el7
    fixed: vendor fix RHSA-2018:3096
show 10 more
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-957.el7, kernel 3.10.0-957.el7, bpftool 3.10.0-957.el7, python-perf 3.10.0-957.el7, kernel-kdump 3.10.0-957.el7, kernel-tools 3.10.0-957.el7, +7 more
    fixed: vendor fix RHSA-2018:3083
  • Red Hat Enterprise Linux Server AUS (v. 7.4) perf 3.10.0-693.61.1.el7, kernel 3.10.0-693.61.1.el7, python-perf 3.10.0-693.61.1.el7, kernel-tools 3.10.0-693.61.1.el7, kernel-tools-libs 3.10.0-693.61.1.el7, kernel-abi-whitelists 3.10.0-693.61.1.el7, +1 more Red Hat Enterprise Linux Server E4S (v. 7.4) perf 3.10.0-693.61.1.el7, kernel 3.10.0-693.61.1.el7, python-perf 3.10.0-693.61.1.el7, kernel-tools 3.10.0-693.61.1.el7, kernel-tools-libs 3.10.0-693.61.1.el7, kernel-bootwrapper 3.10.0-693.61.1.el7, +3 more
    fixed: vendor fix RHSA-2019:4058
  • Red Hat Enterprise Linux Server EUS (v. 7.5) perf 3.10.0-862.46.1.el7, kernel 3.10.0-862.46.1.el7, python-perf 3.10.0-862.46.1.el7, kernel-kdump 3.10.0-862.46.1.el7, kernel-tools 3.10.0-862.46.1.el7, kernel-tools-libs 3.10.0-862.46.1.el7, +6 more
    fixed: vendor fix RHSA-2020:0036
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-957.el7, kernel-debuginfo-common-x86_64 3.10.0-957.el7, kernel-debuginfo-common-ppc64le 3.10.0-957.el7
    fixed: vendor fix RHSA-2018:3083
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.61.1.el7 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.61.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.61.1.el7
    fixed: vendor fix RHSA-2019:4058
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.5) kernel-debuginfo-common-ppc64 3.10.0-862.46.1.el7, kernel-debuginfo-common-x86_64 3.10.0-862.46.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-862.46.1.el7
    fixed: vendor fix RHSA-2020:0036
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.61.1.el7 Red Hat Enterprise Linux Server TUS (v. 7.4) perf 3.10.0-693.61.1.el7, kernel 3.10.0-693.61.1.el7, python-perf 3.10.0-693.61.1.el7, kernel-tools 3.10.0-693.61.1.el7, kernel-tools-libs 3.10.0-693.61.1.el7, kernel-abi-whitelists 3.10.0-693.61.1.el7, +1 more
    fixed: vendor fix RHSA-2019:4058
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-957.el7, kernel 3.10.0-957.el7, bpftool 3.10.0-957.el7, python-perf 3.10.0-957.el7, kernel-tools 3.10.0-957.el7, kernel-tools-libs 3.10.0-957.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-957.el7
    fixed: vendor fix RHSA-2018:3083
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.61.1.rt56.656.el6rt, kernel-rt-trace 3.10.0-693.61.1.rt56.656.el6rt, kernel-rt-vanilla 3.10.0-693.61.1.rt56.656.el6rt, kernel-rt-firmware 3.10.0-693.61.1.rt56.656.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.61.1.rt56.656.el6rt
    fixed: vendor fix RHSA-2019:4057
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 7 perf, kernel, python-perf, kernel-kdump, kernel-tools, kernel-tools-libs, +2 more Red Hat Enterprise Linux Client (v. 7) kernel-headers 3.10.0-957.el7 Red Hat Enterprise Linux ComputeNode (v. 7) kernel-headers 3.10.0-957.el7 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-headers 3.10.0-957.el7 Red Hat Enterprise Linux Server (v. 7) kernel-headers 3.10.0-957.el7
    +1 more products
    Red Hat Enterprise Linux Workstation (v. 7) kernel-headers 3.10.0-957.el7
    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

Timeline

  1. Published
  2. First public exploit (EDB-43345)

Exploit prediction

13.48% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-43345 Linux kernel < 4.10.15 - Race Condition Privilege Escalation local, 2017-12-15

CVSS scores

assigned by version score vector
NVD 3.1 7.0 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 7.6 AV:N/AC:H/Au:N/C:C/I:C/A:C

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.