CVE-2017-17449

Medium

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.

Package Linux Kernel
Published 2017-12-07
Last modified 2026-05-13
CVSS version 3.0
Patch available
Awaiting data

CVSS 3.0 score

4.7

out of 10
Medium
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Vector string
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness type

CWE-200

CVE-2017-17449 is a Information Exposure vulnerability

What is Information Exposure?

The product exposes sensitive information to an actor not authorised to see it. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2017-17449 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2017-17449?

    CVE-2017-17449 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.7 out of 10 , classified as an Information Exposure flaw (CWE-200) . CVE-2017-17449 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2017-17449?

    CVE-2017-17449 has a CVSS score of 4.7 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N .

  • Is there a patch available for CVE-2017-17449?

    No patch is currently available for CVE-2017-17449. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2017-17449 actively exploited?

    No — CVE-2017-17449 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Information Exposure (CWE-200)?

    The product exposes sensitive information to an actor not authorised to see it. View CWE-200 on MITRE CWE →

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