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TI-2017-08231 Aliases CVE-2017-11176GHSA-h5wm-hc9w-hp9m

The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer…

Priority MEDIUM 41CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 20 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

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.

Why it matters now

EPSS 0.03846 90th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Partial Red Hat: 5 advisoriesRed Hat: 20 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 3.2.92; 3.3 to before 3.16.47; 3.17 to before 3.18.61; 3.19 to before 4.1.43; 4.2 to before 4.4.77; 4.5 to before 4.9.38; 4.10 to before 4.11.11; 4.12 to before 4.12.2VulnerableLinux
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 3.2.92; 3.3 to before 3.16.47; 3.17 to before 3.18.61; 3.19 to before 4.1.43; 4.2 to before 4.4.77; 4.5 to before 4.9.38; 4.10 to before 4.11.11; 4.12 to before 4.12.2 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian

Remediation

Red Hat 5 advisories

  • RHSA-2018:3822 Released 2018-12-13 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server (v. 5 ELS) kernel-2.6.18-436.el5, kernel-PAE-2.6.18-436.el5, kernel-PAE-devel-2.6.18-436.el5 +10
  • RHSA-2018:0169 Released 2018-01-25 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-696.20.1.el6, kernel-abi-whitelists-2.6.32-696.20.1.el6, kernel-debug-2.6.32-696.20.1.el6 +6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-696.20.1.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-696.20.1.el6, kernel-abi-whitelists-2.6.32-696.20.1.el6, kernel-debug-2.6.32-696.20.1.el6 +6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-696.20.1.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-696.20.1.el6, kernel-abi-whitelists-2.6.32-696.20.1.el6, kernel-bootwrapper-2.6.32-696.20.1.el6 +9
    • Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-696.20.1.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-696.20.1.el6, kernel-abi-whitelists-2.6.32-696.20.1.el6, kernel-debug-2.6.32-696.20.1.el6 +6
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-696.20.1.el6
  • RHSA-2017:2931 Released 2017-10-19 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-devel-3.10.0-693.5.2.rt56.626.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-devel-3.10.0-693.5.2.rt56.626.el7 +7
Show 2 more Red Hat advisories
  • RHSA-2017:2930 Released 2017-10-19 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-693.5.2.el7, kernel-abi-whitelists-3.10.0-693.5.2.el7, kernel-debug-3.10.0-693.5.2.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.5.2.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-693.5.2.el7, kernel-abi-whitelists-3.10.0-693.5.2.el7, kernel-debug-3.10.0-693.5.2.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.5.2.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-693.5.2.el7, kernel-abi-whitelists-3.10.0-693.5.2.el7, kernel-bootwrapper-3.10.0-693.5.2.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-693.5.2.el7, kernel-tools-libs-devel-3.10.0-693.5.2.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-693.5.2.el7, kernel-abi-whitelists-3.10.0-693.5.2.el7, kernel-debug-3.10.0-693.5.2.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.5.2.el7
  • RHSA-2017:2918 Released 2017-10-19 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-debug-1:3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-debug-devel-1:3.10.0-693.5.2.rt56.592.el6rt +7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2018:0169
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2018:0169
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2018:0169
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2018:0169
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2017:2931
Red Hat Enterprise Linux Server (v. 5 ELS)Fixed RHSA-2018:3822
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2018:0169
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2018:0169
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2018:0169
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2018:0169
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2017:2931
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2017:2918

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-11176
  2. 2026-10-03 Alias added: GHSA-h5wm-hc9w-hp9m
  3. 2026-10-23 EPSS moved to the 90th–95th percentile

References

Exploit 1

Patch 2

Advisory 8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences