CVE-2023-52806

ALSA: hda: Fix possible null-ptr-deref when assigning a stream

Severity Score

5.5

*CVSS v3.1

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:

ALSA: hda: Fix possible null-ptr-deref when assigning a stream

While AudioDSP drivers assign streams exclusively of HOST or LINK type,
nothing blocks a user to attempt to assign a COUPLED stream. As
supplied substream instance may be a stub, what is the case when
code-loading, such scenario ends with null-ptr-deref.

En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: ALSA: hda: Corrige posible null-ptr-deref al asignar un flujo. Si bien los controladores AudioDSP asignan flujos exclusivamente de tipo HOST o LINK, nada impide que un usuario intente asignar un flujo ACOPLADO. Como la instancia de subsecuencia proporcionada puede ser un código auxiliar, cuál es el caso cuando se carga el código, dicho escenario termina con null-ptr-deref.

*Credits: N/A

CVSS Scores

NISTv3.1 5.5

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-05-21 CVE Reserved
2024-05-21 CVE Published
2024-05-24 EPSS Updated
2024-09-11 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (9)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/7de25112de8222fd20564769e6c99dc9f9738a0b	2023-11-28
https://git.kernel.org/stable/c/758c7733cb821041f5fd403b7b97c0b95d319323	2023-11-28
https://git.kernel.org/stable/c/2527775616f3638f4fd54649eba8c7b84d5e4250	2023-11-28
https://git.kernel.org/stable/c/25354bae4fc310c3928e8a42fda2d486f67745d7	2023-11-28
https://git.kernel.org/stable/c/631a96e9eb4228ff75fce7e72d133ca81194797e	2023-11-28
https://git.kernel.org/stable/c/43b91df291c8802268ab3cfd8fccfdf135800ed4	2023-11-28
https://git.kernel.org/stable/c/fe7c1a0c2b25c82807cb46fc3aadbf2664a682b0	2023-11-28
https://git.kernel.org/stable/c/4a320da7f7cbdab2098b103c47f45d5061f42edd	2023-11-28
https://git.kernel.org/stable/c/f93dc90c2e8ed664985e366aa6459ac83cdab236	2023-10-06

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"				< 4.14.331 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.331"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.300 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.300"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.262 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.262"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.202 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.202"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.140 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.140"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1.64 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.64"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.5.13 Search vendor "Linux" for product "Linux Kernel" and version " < 6.5.13"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.3 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.7 Search vendor "Linux" for product "Linux Kernel" and version " < 6.7"		en		Affected