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TI-2017-12474 Aliases CVE-2017-16939GHSA-87xr-wmm8-4mx3

The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before…

Priority LOW 38CWE-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
Fixed

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 XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages.

Why it matters now

EPSS 0.0215 82nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 5 advisories

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 · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.28 to before 3.2.97; 3.3 to before 3.16.52; 3.17 to before 3.18.86; 3.19 to before 4.1.48; 4.2 to before 4.4.104; 4.5 to before 4.9.60; 4.10 to before 4.13.11VulnerableLinux
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.28 to before 3.2.97; 3.3 to before 3.16.52; 3.17 to before 3.18.86; 3.19 to before 4.1.48; 4.2 to before 4.4.104; 4.5 to before 4.9.60; 4.10 to before 4.13.11 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

Red Hat 5 advisories

  • RHSA-2019:1190 Released 2019-05-14 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.47.2.rt56.641.el6rt, kernel-rt-debug-1:3.10.0-693.47.2.rt56.641.el6rt, kernel-rt-debug-devel-1:3.10.0-693.47.2.rt56.641.el6rt +7
  • RHSA-2019:1170 Released 2019-05-14 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) kernel-3.10.0-693.47.2.el7, kernel-abi-whitelists-3.10.0-693.47.2.el7, kernel-debug-3.10.0-693.47.2.el7 +7
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.47.2.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.4) kernel-3.10.0-693.47.2.el7, kernel-abi-whitelists-3.10.0-693.47.2.el7, kernel-bootwrapper-3.10.0-693.47.2.el7 +10
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.4) kernel-debug-devel-3.10.0-693.47.2.el7, kernel-tools-libs-devel-3.10.0-693.47.2.el7
  • RHSA-2018:1355 Released 2018-05-08 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-862.2.3.rt56.806.el7, kernel-rt-debug-3.10.0-862.2.3.rt56.806.el7, kernel-rt-debug-devel-3.10.0-862.2.3.rt56.806.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-862.2.3.rt56.806.el7, kernel-rt-debug-3.10.0-862.2.3.rt56.806.el7, kernel-rt-debug-devel-3.10.0-862.2.3.rt56.806.el7 +7
Show 2 more Red Hat advisories
  • RHSA-2018:1318 Released 2018-05-08 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-862.2.3.el7, kernel-abi-whitelists-3.10.0-862.2.3.el7, kernel-debug-3.10.0-862.2.3.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.2.3.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-862.2.3.el7, kernel-abi-whitelists-3.10.0-862.2.3.el7, kernel-debug-3.10.0-862.2.3.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.2.3.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-862.2.3.el7, kernel-abi-whitelists-3.10.0-862.2.3.el7, kernel-bootwrapper-3.10.0-862.2.3.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-862.2.3.el7, kernel-tools-libs-devel-3.10.0-862.2.3.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-862.2.3.el7, kernel-abi-whitelists-3.10.0-862.2.3.el7, kernel-debug-3.10.0-862.2.3.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.2.3.el7
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-3.10.0-862.2.3.el7, kernel-abi-whitelists-3.10.0-862.2.3.el7, kernel-bootwrapper-3.10.0-862.2.3.el7 +11
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-3.10.0-862.2.3.el7, kernel-doc-3.10.0-862.2.3.el7, kernel-tools-libs-devel-3.10.0-862.2.3.el7
  • RHSA-2018:0654 Released 2018-04-10 · Red Hat rating Important
    kernel-alt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-49.el7a, kernel-abi-whitelists-4.14.0-49.el7a, kernel-alt-4.14.0-49.el7a +12
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-49.el7a, kernel-doc-4.14.0-49.el7a, kernel-tools-libs-devel-4.14.0-49.el7a

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:1318
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:1318
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:1318
Red Hat Enterprise Linux ComputeNode EUS (v. 7.4)Fixed RHSA-2019:1170
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:1318
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4)Fixed RHSA-2019:1170
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2018:1355
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:1318
Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2019:1170
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:1318
Red Hat Enterprise Linux Server Optional EUS (v. 7.4)Fixed RHSA-2019:1170
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:1318
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:1318
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:0654, RHSA-2018:1318
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:0654, RHSA-2018:1318
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2018:1355
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2019:1190
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-16939
  2. 2026-10-03 Alias added: GHSA-87xr-wmm8-4mx3

References

Exploit 1

Patch 3

Advisory 9

Sources

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