CVE-2016-9755 Information

Description

The netfilter subsystem in the Linux kernel before 4.9 mishandles IPv6 reassembly which allows local users to cause a denial of service (integer overflow out-of-bounds write and GPF) or possibly have unspecified other impact via a crafted application that makes socket connect and writev system calls related to net/ipv6/netfilter/nf_conntrack_reasm.c and net/ipv6/netfilter/nf_defrag_ipv6_hooks.c.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9b57da0630c9fd36ed7a20fc0f98dc82cc0777fa http://www.openwall.com/lists/oss-security/2016/12/01/10 http://www.securityfocus.com/bid/94626 https://bugzilla.redhat.com/show_bug.cgi?id=1400904 https://github.com/torvalds/linux/commit/9b57da0630c9fd36ed7a20fc0f98dc82cc0777fa https://groups.google.com/forum/!topic/syzkaller/GFbGpX7nTEo https://www.spinics.net/lists/netdev/msg407525.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8