CVE-2020-11725

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

snd_ctl_elem_add in sound/core/control.c in the Linux kernel through 5.6.3 has a count=info->owner line, which later affects a private_size*count multiplication for unspecified "interesting side effects." NOTE: kernel engineers dispute this finding, because it could be relevant only if new callers were added that were unfamiliar with the misuse of the info->owner field to represent data unrelated to the "owner" concept. The existing callers, SNDRV_CTL_IOCTL_ELEM_ADD and SNDRV_CTL_IOCTL_ELEM_REPLACE, have been designed to misuse the info->owner field in a safe way

** EN DISPUTA ** La función snd_ctl_elem_add en el archivo sound/core/control.c en el kernel de Linux versiones hasta 5.6.3, presenta un error de tipografía de count=info-)owner, que se maneja inapropiadamente en la multiplicación private_size*count. NOTA: los ingenieros de kernel disputan este hallazgo, porque podría ser relevante sólo si se agregaran nuevos llamadores que no estuvieran familiarizados con el mal uso del campo info->owner para representar datos no relacionados con el concepto de "owner". Los llamadores existentes, SNDRV_CTL_IOCTL_ELEM_ADD y SNDRV_CTL_IOCTL_ELEM_REPLACE, han sido diseñados para usar indebidamente el campo info->owner de una manera segura.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-04-12 CVE Reserved
2020-04-12 CVE Published
2023-08-16 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CAPEC

References (3)

URL	Tag	Source
https://lore.kernel.org/alsa-devel/s5h4ktmlfpx.wl-tiwai%40suse.de	X_refsource_misc
https://twitter.com/yabbadabbadrew/status/1248632267028582400	Third Party Advisory

URL	Date	SRC
https://github.com/torvalds/linux/blob/3b2549a3740efb8af0150415737067d87e466c5b/sound/core/control.c#L1434-L1474	2024-08-04

URL	Date	SRC

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"				<= 5.6.3 Search vendor "Linux" for product "Linux Kernel" and version " <= 5.6.3"		-		Affected