CVE-2019-19045

Published: 18 November 2019

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.

From the Ubuntu Security Team

It was discovered that the Mellanox Technologies Innova driver in the Linux kernel did not properly deallocate memory in certain failure conditions. A local attacker could use this to cause a denial of service (kernel memory exhaustion).

Priority

Cvss 3 Severity Score

4.4

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-74.84)
	disco	Released (5.0.0-38.41)
	eoan	Released (5.3.0-26.28)
	focal	Not vulnerable (5.4.0-9.12)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.4~rc6)
	xenial	Not vulnerable (4.2.0-16.19)
	Patches: Introduced by 537a50574175a2b68b0612ffb48cb044a394c7b4 Fixed by c8c2a057fdc7de1cd16f4baa51425b932a42eb39
linux-aws-5.0 Launchpad, Ubuntu, Debian	upstream	Released (5.4~rc6)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Released (5.0.0-1023.26~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
linux-gcp-5.3 Launchpad, Ubuntu, Debian	eoan	Does not exist
	focal	Does not exist
	bionic	Released (5.3.0-1010.11~18.04.1)
	disco	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	upstream	Released (5.4~rc6)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Not vulnerable (5.3.0-1011.12~18.04.1)
	eoan	Does not exist
	focal	Does not exist
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1057.59)
	disco	Released (5.0.0-1023.26)
	eoan	Released (5.3.0-1009.10)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.4~rc6)
	xenial	Not vulnerable (4.4.0-1001.10)
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Released (4.15.0-1057.59~16.04.1)
linux-azure Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1028.30~18.04.1)
	disco	Released (5.0.0-1028.30)
	eoan	Released (5.3.0-1009.10)
	focal	Not vulnerable (5.4.0-1006.6)
	trusty	Released (4.15.0-1066.71~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.4~rc6)
	xenial	Released (4.15.0-1066.71)
linux-azure-5.3 Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-1009.10~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Ignored (end of standard support, was needs-triage)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1028.29~18.04.1)
	disco	Released (5.0.0-1028.29)
	eoan	Released (5.3.0-1011.12)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Released (4.15.0-1052.56)
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1050.53)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1027.28~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Released (5.3.0-26.28~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Released (4.15.0-74.83~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needed)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Ignored (end of life, was needs-triage)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1052.52)
	disco	Released (5.0.0-1024.26)
	eoan	Released (5.3.0-1009.10)
	focal	Not vulnerable (5.4.0-1004.4)
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Not vulnerable (4.4.0-1004.9)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1066.76)
	disco	Ignored (end of life)
	eoan	Released (4.15.0-1066.76)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Ignored (end of standard support, was needs-triage)
linux-oem-5.6 Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (5.4.0-1002.4)
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1033.38)
	disco	Ignored (end of life)
	eoan	Released (5.0.0-1033.38)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1031.34)
	disco	Released (5.0.0-1009.14)
	eoan	Released (5.3.0-1008.9)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Released (4.15.0-1031.34~16.04.1)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1009.14~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1011.12~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1053.57)
	disco	Released (5.0.0-1024.25)
	eoan	Released (5.3.0-1015.17)
	focal	Ignored (end of life, was needed)
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Not vulnerable (4.2.0-1013.19)
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1017.19~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1070.77)
	disco	Ignored (end of life, was pending)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc6)
	xenial	Not vulnerable (4.4.0-1012.12)

Severity score breakdown

Parameter	Value
Base score	4.4
Attack vector	Local
Attack complexity	Low
Privileges required	High
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

References

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