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Sid 1-41027

Message

OS-LINUX Linux net af_packet.c tpacket version race condition use after free attempt

Summary

Race condition in net/packet/afpacket.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging the CAPNETRAW capability to change a socket version, related to the packetsetring and packetsetsockopt functions.

Impact

CVSS base score 7.8 CVSS impact score 5.9 CVSS exploitability score 1.8 confidentialityImpact HIGH integrityImpact HIGH availabilityImpact HIGH

CVE-2016-8655:

CVSS base score 7.8

CVSS impact score 5.9

CVSS exploitability score 1.8

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Detailed information

CVE-2016-8655: Race condition in net/packet/afpacket.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging the CAPNETRAW capability to change a socket version, related to the packetsetring and packetsetsockopt functions.

Affected systems

  • linux linux_kernel 4.8.12

Ease of attack

CVE-2016-8655:

Access Vector

Access Complexity

Authentication

False positives

None known

False negatives

None known

Corrective action

Upgrade to the latest non-affected version of the software.

Apply the appropriate vendor supplied patches.

Contributors

  • Talos research team.
  • This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology.
  • For more information see nvd.

Additional References