An issue was discovered in the Linux kernel before 4.18.7. In create_qp_common in drivers/infiniband/hw/mlx5/qp.c, mlx5_ib_create_qp_resp was never initialized, resulting in a leak of stack memory to userspace.
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00056.html
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7
https://github.com/torvalds/linux/commit/0625b4ba1a5d4703c7fb01c497bd6c156908af00
Source: MITRE
Published: 2019-07-26
Updated: 2019-11-20
Type: CWE-119
Base Score: 2.1
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 3.9
Severity: LOW
Base Score: 3.3
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Impact Score: 1.4
Exploitability Score: 1.8
Severity: LOW