A NULL pointer dereference was found in the net/rds/rdma.c __rds_rdma_map() function in the Linux kernel before 4.14.7 allowing local attackers to cause a system panic and a denial-of-service, related to RDS_GET_MR and RDS_GET_MR_FOR_DEST.
https://xorl.wordpress.com/2017/12/18/linux-kernel-rdma-null-pointer-dereference/
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.7
https://www.debian.org/security/2018/dsa-4187
https://usn.ubuntu.com/3677-2/
https://usn.ubuntu.com/3677-1/
https://usn.ubuntu.com/3674-2/
https://usn.ubuntu.com/3674-1/
https://usn.ubuntu.com/3619-2/
https://usn.ubuntu.com/3619-1/
https://patchwork.kernel.org/patch/10096441/
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
https://github.com/torvalds/linux/commit/f3069c6d33f6ae63a1668737bc78aaaa51bff7ca
https://bugzilla.redhat.com/show_bug.cgi?id=1527393