CVE-2020-0429

Published: 17 September 2020

In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-152735806

Priority

Cvss 3 Severity Score

6.7

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-10.11)
	focal	Not vulnerable (5.4.0-9.12)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (4.14~rc4)
	xenial	Released (4.4.0-179.209)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by b228a94066406b6c456321d69643b0d7ce11cfa6 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by cdd10c9627496ad25c87ce6394e29752253c69d3
linux-aws Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1001.1)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (4.14~rc4)
	xenial	Released (4.4.0-1107.118)
linux-aws-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-aws-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-aws-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1018.18~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-aws-hwe Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Not vulnerable (4.15.0-1030.31~16.04.1)
linux-azure Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Not vulnerable (5.4.0-1006.6)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (4.14~rc4)
	xenial	Released (4.15.0-1013.13~16.04.2)
linux-azure-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1082.92)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-azure-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-azure-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1020.20~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-gcp Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Released (4.15.0-1014.14~16.04.1)
linux-gcp-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1071.81)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-gcp-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-gcp-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1019.19~18.04.2)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1030.32)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.0.0-1011.11~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1011.12~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.18.0-13.14~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Released (4.15.0-24.26~16.04.1)
linux-hwe-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-37.41~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Ignored (end of life, was needs-triage)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.2)
	focal	Not vulnerable (5.4.0-1004.4)
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Released (4.4.0-1071.78)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1002.3)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Ignored (end of standard support, was needs-triage)
linux-oem-5.6 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.6.0-1007.7)
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.0.0-1010.11)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1007.9)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Not vulnerable (4.15.0-1007.9~16.04.1)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was needs-triage)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-oracle-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1019.19~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-raspi Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.4.0-1007.7)
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-raspi-5.4 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.4.0-1013.13~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.15.0-1006.7)
	focal	Ignored (end of life, was needs-triage)
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Released (4.4.0-1133.142)
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1017.19~18.04.1)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-riscv Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Not vulnerable (5.4.0-24.28)
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1053.57)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (4.14~rc4)
	xenial	Released (4.4.0-1137.145)

Severity score breakdown

Parameter	Value
Base score	6.7
Attack vector	Local
Attack complexity	Low
Privileges required	High
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

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