What is CVE-2017-7979?

CVE-2017-7979 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2017-7979 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2017-7979?

CVE-2017-7979 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2017-7979?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2017-7979 patch availability.

Is CVE-2017-7979 actively exploited?

CVE-2017-7979 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2017-7979

High

The cookie feature in the packet action API implementation in net/sched/act_api.c in the Linux kernel 4.11.x through 4.11-rc7 mishandles the tb nlattr array, which allows local users to cause a denial of service (uninitialized memory access and refcount underflow, and system hang or crash) or possibly have unspecified other impact via "tc filter add" commands in certain contexts. NOTE: this does not affect stable kernels, such as 4.10.x, from kernel.org.

Package Linux Kernel

Published 2017-04-19

Last modified 2026-05-13

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-20

CVE-2017-7979 is a Improper Input Validation vulnerability

What is Improper Input Validation?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. Learn more on MITRE CWE

References

8 total

Marc
http://marc.info/?l=linux-netdev&m=149200742616349

Mailing List Patch Third Party Advisory
Marc
http://marc.info/?l=linux-netdev&m=149200746116365

Mailing List Patch Third Party Advisory
Marc
http://marc.info/?l=linux-netdev&m=149200746116366

Mailing List Patch Third Party Advisory
Marc
http://marc.info/?l=linux-netdev&m=149251041420194

Mailing List Patch Third Party Advisory
Marc
http://marc.info/?l=linux-netdev&m=149251041420195

Mailing List Patch Third Party Advisory

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2017-7979

Severity High

CVSS score 7.8 / 10

CVSS version 3.0

Published 2017-04-19

Modified 2026-05-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2017-7979?

CVE-2017-7979 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2017-7979 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2017-7979?

CVE-2017-7979 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2017-7979?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2017-7979 patch availability.
Is CVE-2017-7979 actively exploited?

No. CVE-2017-7979 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.