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TI-2017-12747 Aliases CVE-2017-17449GHSA-qpxm-m9h2-3v4r

The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel…

Priority LOW 22CWE-200Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-200.

Summary

The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.

Why it matters now

EPSS 0.00436 38th percentileScored 2026-11-07
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 · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*up to 4.14.4VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions up to 4.14.4 Vulnerable ·Linux

Remediation

Red Hat 5 advisories

  • RHSA-2018:1130 Released 2018-04-17 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) kernel-3.10.0-693.25.2.el7, kernel-abi-whitelists-3.10.0-693.25.2.el7, kernel-debug-3.10.0-693.25.2.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.25.2.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.4) kernel-3.10.0-693.25.2.el7, kernel-abi-whitelists-3.10.0-693.25.2.el7, kernel-bootwrapper-3.10.0-693.25.2.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.4) kernel-debug-devel-3.10.0-693.25.2.el7, kernel-tools-libs-devel-3.10.0-693.25.2.el7
  • RHSA-2018:1170 Released 2018-04-17 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-debug-1:3.10.0-693.25.2.rt56.612.el6rt, kernel-rt-debug-devel-1:3.10.0-693.25.2.rt56.612.el6rt +7
  • RHSA-2018:1062 Released 2018-04-10 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-debug-3.10.0-862.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-debug-3.10.0-862.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-bootwrapper-3.10.0-862.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-862.el7, kernel-tools-libs-devel-3.10.0-862.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-862.el7, kernel-abi-whitelists-3.10.0-862.el7, kernel-debug-3.10.0-862.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-862.el7
Show 2 more Red Hat advisories
  • RHSA-2018:0676 Released 2018-04-10 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-862.rt56.804.el7, kernel-rt-debug-3.10.0-862.rt56.804.el7, kernel-rt-debug-devel-3.10.0-862.rt56.804.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-862.rt56.804.el7, kernel-rt-debug-3.10.0-862.rt56.804.el7, kernel-rt-debug-devel-3.10.0-862.rt56.804.el7 +7
  • 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: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode EUS (v. 7.4)Fixed RHSA-2018:1130
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4)Fixed RHSA-2018:1130
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2018:1130
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Server Optional EUS (v. 7.4)Fixed RHSA-2018:1130
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:1062
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2018:0654
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2018:0654
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2018:0676
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2018:0676
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2018:1170
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-17449
  2. 2026-10-03 Alias added: GHSA-qpxm-m9h2-3v4r

References

Advisory 15

Other 1

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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