CVE-2020-12464

kernel: use-after-free in usb_sg_cancel function in drivers/usb/core/message.c

Severity Score

6.7

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

usb_sg_cancel in drivers/usb/core/message.c in the Linux kernel before 5.6.8 has a use-after-free because a transfer occurs without a reference, aka CID-056ad39ee925.

a función usb_sg_cancel en el archivo drivers/usb/core/message.c en el kernel de Linux versiones anteriores a la versión 5.6.8, tiene un uso de la memoria previamente liberada porque se produce una transferencia sin una referencia, también se conoce como CID-056ad39ee925.

A use-after-free flaw was found in usb_sg_cancel in drivers/usb/core/message.c in the USB core subsystem. This flaw allows a local attacker with a special user or root privileges to crash the system due to a race problem in the scatter-gather cancellation and transfer completion in usb_sg_wait. This vulnerability can also lead to a leak of internal kernel information.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-04-29 CVE Reserved
2020-04-29 CVE Published
2024-06-24 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (19)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html	Mailing List
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html	Mailing List
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html	Mailing List
https://security.netapp.com/advisory/ntap-20200608-0001	Third Party Advisory

URL	Date	SRC
https://lkml.org/lkml/2020/3/23/52	2024-08-04

URL	Date	SRC
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=056ad39ee9253873522f6469c3364964a322912b	2023-10-12
https://github.com/torvalds/linux/commit/056ad39ee9253873522f6469c3364964a322912b	2023-10-12
https://patchwork.kernel.org/patch/11463781	2023-10-12

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html	2023-10-12
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.8	2023-10-12
https://usn.ubuntu.com/4387-1	2023-10-12
https://usn.ubuntu.com/4388-1	2023-10-12
https://usn.ubuntu.com/4389-1	2023-10-12
https://usn.ubuntu.com/4390-1	2023-10-12
https://usn.ubuntu.com/4391-1	2023-10-12
https://www.debian.org/security/2020/dsa-4698	2023-10-12
https://www.debian.org/security/2020/dsa-4699	2023-10-12
https://access.redhat.com/security/cve/CVE-2020-12464	2021-05-18
https://bugzilla.redhat.com/show_bug.cgi?id=1831726	2021-05-18

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 3.16.85 Search vendor "Linux" for product "Linux Kernel" and version " < 3.16.85"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.17 < 4.4.221 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.17 < 4.4.221"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.5 < 4.9.221 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.221"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.10 < 4.14.178 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.14.178"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.15 < 4.19.119 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.19.119"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.20 < 5.4.36 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.36"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 5.6.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.6.8"		-		Affected
Netapp Search vendor "Netapp"		Active Iq Unified Manager Search vendor "Netapp" for product "Active Iq Unified Manager"				-		vmware_vsphere		Affected
Netapp Search vendor "Netapp"		Cloud Backup Search vendor "Netapp" for product "Cloud Backup"				-		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h300s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h300s"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h410c Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h410c"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h410s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h410s"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h500s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h500s"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h610c Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h610c"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h610s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h610s"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h615c Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h615c"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h700s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h700s"		-		Affected
Netapp Search vendor "Netapp"		Hci Storage Nodes Search vendor "Netapp" for product "Hci Storage Nodes"				-		-		Affected
Netapp Search vendor "Netapp"		Solidfire \& Hci Storage Node Search vendor "Netapp" for product "Solidfire \& Hci Storage Node"				-		-		Affected
Netapp Search vendor "Netapp"		Steelstore Cloud Integrated Storage Search vendor "Netapp" for product "Steelstore Cloud Integrated Storage"				-		-		Affected
Netapp Search vendor "Netapp"		Aff A700s Search vendor "Netapp" for product "Aff A700s"				-		-		Affected
Netapp Search vendor "Netapp"		Hci Compute Node Search vendor "Netapp" for product "Hci Compute Node"				-		-		Affected
Netapp Search vendor "Netapp"		Solidfire Baseboard Management Controller Search vendor "Netapp" for product "Solidfire Baseboard Management Controller"				-		-		Affected