CVE-2021-47253

drm/amd/display: Fix potential memory leak in DMUB hw_init

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:

drm/amd/display: Fix potential memory leak in DMUB hw_init

[Why]
On resume we perform DMUB hw_init which allocates memory:
dm_resume->dm_dmub_hw_init->dc_dmub_srv_create->kzalloc
That results in memory leak in suspend/resume scenarios.

[How]
Allocate memory for the DC wrapper to DMUB only if it was not
allocated before.
No need to reallocate it on suspend/resume.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: corrige una posible pérdida de memoria en DMUB hw_init [Por qué] Al reanudar ejecutamos DMUB hw_init que asigna memoria: dm_resume->dm_dmub_hw_init->dc_dmub_srv_create->kzalloc Eso resulta en pérdida de memoria en escenarios de suspensión/reanudación. [Cómo] Asigne memoria para el contenedor DC a DMUB solo si no se asignó antes. No es necesario reasignarlo al suspender/reanudar.

*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

2024-04-10 CVE Reserved
2024-05-21 CVE Published
2024-05-22 EPSS Updated
2024-11-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/9e8c2af010463197315fa54a6c17e74988b5259c	2021-06-18
https://git.kernel.org/stable/c/aa000f828e60ac15d6340f606ec4a673966f5b0b	2021-06-18
https://git.kernel.org/stable/c/c5699e2d863f58221044efdc3fa712dd32d55cde	2021-06-02

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"				< 5.10.45 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.45"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.12.12 Search vendor "Linux" for product "Linux Kernel" and version " < 5.12.12"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.13 Search vendor "Linux" for product "Linux Kernel" and version " < 5.13"		en		Affected