What’s Vulnerable › Vulnerabilities

CVE-2019-19045

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-11-18 · updated 2026-06-17
• Weakness: CWE-401

Description

A memory leak in the mlx5_fpga_conn_create_cq() function in drivers/net/ethernet/mellanox/mlx5/core/fpga/conn.c in the Linux kernel before 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering mlx5_vector2eqn() failures, aka CID-c8c2a057fdc7.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 19.04, 19.10
• Linux kernel: before 5.3.11 — fixed in 5.3.11
• openSUSE Leap: 15.1

How to fix

Upgrade to a fixed version: Linux kernel 5.3.11. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11
• https://github.com/torvalds/linux/commit/c8c2a057fdc7de1cd16f4baa51425b932a42eb39
• https://security.netapp.com/advisory/ntap-20191205-0001/
• https://usn.ubuntu.com/4225-1/
• https://usn.ubuntu.com/4225-2/
• https://usn.ubuntu.com/4226-1/
• https://usn.ubuntu.com/4227-1/
• https://usn.ubuntu.com/4227-2/
• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11
• https://github.com/torvalds/linux/commit/c8c2a057fdc7de1cd16f4baa51425b932a42eb39

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