Use-after-free error in Linux kernel - CVE-2017-6346

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Main Vulnerability Database Vulnerabilities #VU6653

Use-after-free error in Linux kernel - CVE-2017-6346

Published: May 23, 2017 / Updated: March 15, 2018


Vulnerability identifier: #VU6653
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-6346
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists due to race condition in net/packet/af_packet.c. A local attacker can use a multithreaded application, make PACKET_FANOUT setsockopt system calls, trigger use-after-free error and cause the system to crash.

Affected software

Linux kernel
SUSE Linux

How to mitigate CVE-2017-6346

Install update from vendor's website.


External References

Related Security Bulletins