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Fencer Intel
high 7.8

CVE-2017-11176 json

The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic.

published 9y ago modified 4mo ago also EUVD-2017-2810

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.8%
EPSS 3.8% chance of exploitation in 30 days, percentile 90%
public exploits
1
Exploit-DB

Summary

The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.

Patch / fix

  • linux linux_kernel 3.2.92, 3.16.47, 3.18.61, 4.1.43, 4.4.77, 4.9.38, 4.11.11, 4.12.2
  • linux Debian 14, Debian 13, Debian 12 4.11.11-1

debian advisories DEBIAN-CVE-2017-11176

  • linux Ubuntu 14.04 LTS 3.13.0-135.184
  • linux Ubuntu 16.04 LTS 4.4.0-93.116
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1032.41
  • linux-gcp Ubuntu 16.04 LTS 4.10.0-1008.8
  • linux-gke Ubuntu 16.04 LTS 4.4.0-1028.28
  • linux-hwe Ubuntu 16.04 LTS 4.13.0-32.35~16.04.1
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1071.79
  • linux-lts-xenial Ubuntu 14.04 LTS 4.4.0-93.116~14.04.1

ubuntu advisories UBUNTU-CVE-2017-11176

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 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt-trace enterprise mrg 2 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt-vanilla enterprise mrg 2 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt-firmware enterprise mrg 2 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt RHEL 7 EXTRAS_RT 3.10.0-693.5.2.rt56.626.el7
  • kernel-rt-kvm RHEL 7 EXTRAS_RT 3.10.0-693.5.2.rt56.626.el7
  • kernel-rt-trace RHEL 7 EXTRAS_RT 3.10.0-693.5.2.rt56.626.el7

red hat advisories RHSA-2018:3822RHSA-2017:2918RHSA-2017:2931RHSA-2018:0169RHSA-2017:2930

  • kernel-ec2 SLE Module for Public Cloud 12 3.12.61-52.101.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.63.1
  • kernel-xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.63.1
  • kernel-syms SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.63.1
  • kernel-source SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.63.1
  • kernel-default SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.63.1
  • kgraft-patch-SLE12-SP1_Update_22 SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 1-2.1
  • kernel-ec2 SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 3.0.101-0.47.106.5.1

suse advisories SUSE-SU-2017:2920-1SUSE-SU-2017:2908-1SUSE-SU-2017:2525-1SUSE-SU-2017:2389-1SUSE-SU-2017:2342-1

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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-2017-11176 updated cvss 7.8

kernel: Use-after-free in sys_mq_notify()

  • Red Hat Enterprise Linux 7 perf, kernel, python-perf, kernel-kdump, kernel-tools, kernel-tools-libs, +2 more
    affected: no fix available
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-693.5.2.el7, kernel 3.10.0-693.5.2.el7, python-perf 3.10.0-693.5.2.el7, kernel-tools 3.10.0-693.5.2.el7, kernel-tools-libs 3.10.0-693.5.2.el7, kernel-abi-whitelists 3.10.0-693.5.2.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.5.2.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-693.5.2.el7, kernel 3.10.0-693.5.2.el7, python-perf 3.10.0-693.5.2.el7, kernel-tools 3.10.0-693.5.2.el7, kernel-tools-libs 3.10.0-693.5.2.el7, kernel-abi-whitelists 3.10.0-693.5.2.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.5.2.el7
    fixed: vendor fix RHSA-2017:2930
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-696.20.1.el6, kernel 2.6.32-696.20.1.el6, kernel-firmware 2.6.32-696.20.1.el6, kernel-abi-whitelists 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-693.5.2.rt56.626.el7, kernel-rt-kvm 3.10.0-693.5.2.rt56.626.el7, kernel-rt-trace 3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-kvm 3.10.0-693.5.2.rt56.626.el7, kernel-rt-trace-kvm 3.10.0-693.5.2.rt56.626.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.5.2.rt56.626.el7
    fixed: vendor fix RHSA-2017:2931
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-696.20.1.el6, kernel 2.6.32-696.20.1.el6, kernel-firmware 2.6.32-696.20.1.el6, kernel-abi-whitelists 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-693.5.2.rt56.626.el7, kernel-rt-trace 3.10.0-693.5.2.rt56.626.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.5.2.rt56.626.el7
    fixed: vendor fix RHSA-2017:2931
  • Red Hat Enterprise Linux Server (v. 5 ELS) kernel 2.6.18-436.el5, kernel-PAE 2.6.18-436.el5, kernel-xen 2.6.18-436.el5, kernel-kdump 2.6.18-436.el5, kernel-debuginfo-common 2.6.18-436.el5
    fixed: vendor fix RHSA-2018:3822
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-696.20.1.el6, kernel 2.6.32-696.20.1.el6, kernel-kdump 2.6.32-696.20.1.el6, kernel-firmware 2.6.32-696.20.1.el6, kernel-bootwrapper 2.6.32-696.20.1.el6, kernel-abi-whitelists 2.6.32-696.20.1.el6, +4 more
    fixed: vendor fix RHSA-2018:0169
show 8 more
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-693.5.2.el7, kernel 3.10.0-693.5.2.el7, python-perf 3.10.0-693.5.2.el7, kernel-kdump 3.10.0-693.5.2.el7, kernel-tools 3.10.0-693.5.2.el7, kernel-tools-libs 3.10.0-693.5.2.el7, +6 more
    fixed: vendor fix RHSA-2017:2930
  • Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-ppc64 2.6.32-696.20.1.el6, kernel-debuginfo-common-s390x 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-693.5.2.el7, kernel-debuginfo-common-x86_64 3.10.0-693.5.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.5.2.el7
    fixed: vendor fix RHSA-2017:2930
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-696.20.1.el6, kernel 2.6.32-696.20.1.el6, kernel-firmware 2.6.32-696.20.1.el6, kernel-abi-whitelists 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-693.5.2.el7, kernel 3.10.0-693.5.2.el7, python-perf 3.10.0-693.5.2.el7, kernel-tools 3.10.0-693.5.2.el7, kernel-tools-libs 3.10.0-693.5.2.el7, kernel-abi-whitelists 3.10.0-693.5.2.el7, +1 more
    fixed: vendor fix RHSA-2017:2930
  • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.5.2.el7
    fixed: vendor fix RHSA-2017:2930
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-trace 3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-vanilla 3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-firmware 3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.5.2.rt56.592.el6rt
    fixed: vendor fix RHSA-2017:2918

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-45553)

Exploit prediction

3.85% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-45553 Linux Kernel < 4.11.8 - 'mq_notify: double sock_put()' Local Privilege Escalation local, 2018-10-02

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel 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.