CVE-2021-47605

vduse: fix memory corruption in vduse_dev_ioctl()

Severity Score

"-"

*CVSS v-

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

vduse: fix memory corruption in vduse_dev_ioctl()

The "config.offset" comes from the user. There needs to a check to
prevent it being out of bounds. The "config.offset" and
"dev->config_size" variables are both type u32. So if the offset if
out of bounds then the "dev->config_size - config.offset" subtraction
results in a very high u32 value. The out of bounds offset can result
in memory corruption.

En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: vduse: corrige corrupción de memoria en vduse_dev_ioctl() El "config.offset" proviene del usuario. Es necesario realizar un control para evitar que esté fuera de los límites. Las variables "config.offset" y "dev->config_size" son ambas del tipo u32. Entonces, si el desplazamiento está fuera de los límites, entonces la resta "dev->config_size - config.offset" da como resultado un valor u32 muy alto. El desplazamiento fuera de los límites puede provocar daños en la memoria.

*Credits: N/A

CVSS Scores

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-05-24 CVE Reserved
2024-06-19 CVE Published
2024-06-20 EPSS Updated
2024-12-19 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source
https://git.kernel.org/stable/c/c8a6153b6c59d95c0e091f053f6f180952ade91e	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/e6c67560b4341914bec32ec536e931c22062af65	2021-12-22
https://git.kernel.org/stable/c/ff9f9c6e74848170fcb45c8403c80d661484c8c9	2021-12-08

URL	Date	SRC

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"				>= 5.15 < 5.15.11 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.15.11"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.15 < 5.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.15 < 5.16"		en		Affected