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CVE-2019-19066

Published: 18 November 2019

A memory leak in the bfad_im_get_stats() function in drivers/scsi/bfa/bfad_attr.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering bfa_port_get_stats() failures, aka CID-0e62395da2bd.

From the Ubuntu Security Team

It was discovered that the Brocade BFA Fibre Channel device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion).

Priority

Low

Cvss 3 Severity Score

4.7

Score breakdown

Status

Package Release Status
linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1063.67)
disco Ignored
(end of life)
eoan
Released (5.3.0-1013.14)
focal Not vulnerable
(5.4.0-1005.5)
trusty
Released (4.4.0-1062.66)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1102.113)
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 (5.5~rc1)
xenial
Released (4.15.0-1063.67~16.04.1)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1027.30)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1016.17~18.04.1)
eoan Does not exist

disco Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1014.15~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-oem-5.6
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

trusty Does not exist

focal Not vulnerable
(5.6.0-1007.7)
upstream
Released (5.5~rc1)
xenial Does not exist

linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-91.92)
disco Ignored
(end of life)
eoan
Released (5.3.0-42.34)
focal Not vulnerable
(5.4.0-18.22)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.5~rc1)
xenial
Released (4.4.0-174.204)
Patches:
Introduced by

a36c61f9025b8924f99f54d518763bee7aa84085

Fixed by 0e62395da2bd5166d7c9e14cbc7503b256a34cb0
linux-azure
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1035.37)
disco Ignored
(end of life)
eoan
Released (5.3.0-1016.17)
focal Not vulnerable
(5.4.0-1006.6)
trusty
Released (4.15.0-1074.79~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1075.80)
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 (5.5~rc1)
xenial Ignored
(end of standard support, was needs-triage)
linux-gcp
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1033.34)
disco Ignored
(end of life)
eoan
Released (5.3.0-1014.15)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1058.62)
linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1014.15~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

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 (5.5~rc1)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1055.58)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1032.33)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-42.34~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-91.92~16.04.1)
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 (5.5~rc1)
xenial Ignored
(end of life, was needs-triage)
linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1056.57)
disco Ignored
(end of life)
eoan
Released (5.3.0-1012.13)
focal Not vulnerable
(5.4.0-1004.4)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1066.73)
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 (5.5~rc1)
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
Released (4.4.0-174.204~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.5~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1076.86)
disco Ignored
(end of life)
eoan
Released (4.15.0-1076.86)
focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Ignored
(end of standard support, was needs-triage)
linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1043.48)
disco Ignored
(end of life)
eoan
Released (5.0.0-1043.48)
focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1035.39)
disco Ignored
(end of life)
eoan
Released (5.3.0-1011.12)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1035.38~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1013.18)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
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 (5.5~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1057.61)
disco Ignored
(end of life)
eoan
Released (5.3.0-1019.21)
focal Ignored
(end of life, was needed)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1129.138)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1019.21~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1074.81)
disco Ignored
(end of life)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1133.141)

Severity score breakdown

Parameter Value
Base score 4.7
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H