CVE-2021-37159

kernel: use-after-free in hso_free_net_device() in drivers/net/usb/hso.c

Severity Score

6.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.

la función hso_free_net_device en el archivo drivers/net/usb/hso.c en el kernel de Linux versiones hasta 5.13.4 llama a unregister_netdev sin comprobar el estado NETREG_REGISTERED, conllevando a un uso de memoria previamente liberada y un double free

A flaw use-after-free in the Linux kernel USB High Speed Mobile Devices functionality was found in the way user detaches USB device. A local user could use this flaw to crash the system or escalate their privileges on the system.

*Credits: N/A

Attack Vector

Physical

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-07-21 CVE Reserved
2021-07-21 CVE Published
2024-04-05 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-415: Double Free
CWE-416: Use After Free

CAPEC

References (10)

URL	Tag	Source
https://bugzilla.suse.com/show_bug.cgi?id=1188601
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a6ecfb39ba9d7316057cea823b196b734f6b18ca
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=dcb713d53e2eadf42b878c12a471e74dc6ed3145
https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html	Mailing List
https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html	Mailing List
https://security.netapp.com/advisory/ntap-20210819-0003	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpujul2022.html	2024-03-25
https://www.spinics.net/lists/linux-usb/msg202228.html	2024-03-25

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2021-37159	2022-05-10
https://bugzilla.redhat.com/show_bug.cgi?id=1985353	2022-05-10

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"				<= 5.13.4 Search vendor "Linux" for product "Linux Kernel" and version " <= 5.13.4"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Oracle Search vendor "Oracle"		Communications Cloud Native Core Binding Support Function Search vendor "Oracle" for product "Communications Cloud Native Core Binding Support Function"				22.1.3 Search vendor "Oracle" for product "Communications Cloud Native Core Binding Support Function" and version "22.1.3"		-		Affected
Oracle Search vendor "Oracle"		Communications Cloud Native Core Network Exposure Function Search vendor "Oracle" for product "Communications Cloud Native Core Network Exposure Function"				22.1.1 Search vendor "Oracle" for product "Communications Cloud Native Core Network Exposure Function" and version "22.1.1"		-		Affected
Oracle Search vendor "Oracle"		Communications Cloud Native Core Policy Search vendor "Oracle" for product "Communications Cloud Native Core Policy"				22.2.0 Search vendor "Oracle" for product "Communications Cloud Native Core Policy" and version "22.2.0"		-		Affected