Race condition in net/packet/af_packet.c in the Linux kernel before 4.9.13...

Vulnerability Description

Race condition in net/packet/af_packet.c in the Linux kernel before 4.9.13 allows local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via a multithreaded application that makes PACKET_FANOUT setsockopt system calls.

References

• http://www.securityfocus.com/bid/96508
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d199fab63c11998a602205f7ee7ff7c05c97164b
• https://source.android.com/security/bulletin/2017-09-01
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.13
• http://www.openwall.com/lists/oss-security/2017/02/28/6
• http://www.debian.org/security/2017/dsa-3804
• https://github.com/torvalds/linux/commit/d199fab63c11998a602205f7ee7ff7c05c97164b