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CVE-2017-7979 Detail

Description

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.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.8 HIGH
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://marc.info/?l=linux-netdev&m=149200742616349 Mailing List  Patch  Third Party Advisory 
http://marc.info/?l=linux-netdev&m=149200746116365 Mailing List  Patch  Third Party Advisory 
http://marc.info/?l=linux-netdev&m=149200746116366 Mailing List  Patch  Third Party Advisory 
http://marc.info/?l=linux-netdev&m=149251041420194 Mailing List  Patch  Third Party Advisory 
http://marc.info/?l=linux-netdev&m=149251041420195 Mailing List  Patch  Third Party Advisory 
http://www.securityfocus.com/bid/97969
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1682368 Issue Tracking  Patch 
https://bugzilla.proxmox.com/show_bug.cgi?id=1351 Issue Tracking  Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-7979
NVD Published Date:
04/19/2017
NVD Last Modified:
04/25/2017
Source:
MITRE