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CVE-2019-19062

Published: 18 November 2019

A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures, aka CID-ffdde5932042.

From the Ubuntu Security Team

It was discovered that the crypto subsystem in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (kernel memory exhaustion).

Priority

Medium

Cvss 3 Severity Score

4.7

Score breakdown

Status

Package Release Status
linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1060.62)
disco Ignored
(end of life, was pending)
eoan
Released (5.3.0-1011.12)
focal Not vulnerable
(5.4.0-1005.5)
trusty
Released (4.4.0-1061.65)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1101.112)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1024.27~18.04.1)
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-azure-5.3
Launchpad, Ubuntu, Debian
disco Does not exist

bionic
Released (5.3.0-1013.14~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1016.17~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1082.92)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-88.88)
disco Ignored
(end of life, was pending)
eoan
Released (5.3.0-40.32)
focal Not vulnerable
(5.4.0-9.12)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (5.5~rc1)
xenial
Released (4.4.0-173.203)
Patches:
Introduced by

a38f7907b926e4c6c7d389ad96cc38cec2e5a9e9

Fixed by ffdde5932042600c6807d46c1550b28b0db6a3bc
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 (4.15.0-1060.62~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1029.31~18.04.1)
disco Ignored
(end of life, was pending)
eoan
Released (5.3.0-1013.14)
focal Not vulnerable
(5.4.0-1006.6)
trusty
Released (4.15.0-1071.76~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1071.76)
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 Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1029.30~18.04.1)
disco Ignored
(end of life, was pending)
eoan
Released (5.3.0-1012.13)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1055.59)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1071.81)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1012.13~18.04.1)
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 (4.15.0-1052.55)
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 (5.0.0-1029.30~18.04.1)
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-gke-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1012.13~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-40.32~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-88.88~16.04.1)
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 (4.15.0-1053.53)
disco Ignored
(end of life, was pending)
eoan
Released (5.3.0-1010.11)
focal Not vulnerable
(5.4.0-1004.4)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1065.72)
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 (4.4.0-173.203~14.04.1)
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 (4.15.0-1073.83)
disco Ignored
(end of life)
eoan Ignored
(end of life, was pending)
focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
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
(5.6.0-1007.7)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1037.42)
disco Ignored
(end of life)
eoan
Released (5.0.0-1037.42)
focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1033.36)
disco Ignored
(end of life, was pending)
eoan
Released (5.3.0-1009.10)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.15.0-1033.36~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1010.15~18.04.1)
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-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-raspi
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.4.0-1007.7)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1055.59)
disco Ignored
(end of life, was pending)
eoan
Released (5.3.0-1018.20)
focal Ignored
(end of life, was needed)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1128.137)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic
Released (5.3.0-1018.20~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.4.0-24.28)
trusty Does not exist

upstream
Released (5.5~rc1)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1072.79)
disco Ignored
(end of life, was pending)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (5.5~rc1)
xenial
Released (4.4.0-1132.140)

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