CVE-2021-34693

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.

El archivo net/can/bcm.c en el kernel de Linux versiones hasta 5.12.10, permite a usuarios locales obtener información confidencial de la memoria de la pila del kernel porque partes de una estructura de datos no están inicializadas

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-06-14 CVE Reserved
2021-06-14 CVE Published
2023-03-08 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-909: Missing Initialization of Resource

CAPEC

References (7)

URL	Tag	Source
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5e87ddbe3942e27e939bdc02deb8579b0cbd8ecc
https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html	Mailing List
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html	Mailing List
https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html	Mailing List
https://lore.kernel.org/netdev/trinity-87eaea25-2a7d-4aa9-92a5-269b822e5d95-1623609211076%403c-app-gmx-bs04/T

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2021/06/15/1	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://www.debian.org/security/2021/dsa-4941	2024-03-25

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"				>= 2.6.25 <= 5.12.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.25 <= 5.12.10"		-		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
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected