description: In FreeBSD before 11.2-STABLE(r338986), 11.2-RELEASE-p4, 11.1-RELEASE-p15, 10.4-STABLE(r338985), and 10.4-RELEASE-p13, due to improper maintenance of IPv6 protocol control block flags through various failure paths, an unprivileged authenticated local user may be able to cause a NULL pointer dereference causing the kernel to crash.
problem types: Denial of service
affected:
{
product: FreeBSD
vendor: FreeBSD
versions:
status: affected, version: 11.2 before 11.2-RELEASE-p4
status: affected, version: 11.1 before 11.1-RELEASE-p15
status: affected, version: 10.x before 10.4-RELEASE-p13
}