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CVE-2017-7979

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Date: April 19, 2017

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.

Language: C

Severity Score

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Top Fix

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CVSS v3

Base Score:
Attack Vector (AV):
Attack Complexity (AC):
Privileges Required (PR):
User Interaction (UI):
Scope (S):
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV):
Access Complexity (AC):
Authentication (AU):
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE
Additional information:

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