CVE-2022-49498

ALSA: pcm: Check for null pointer of pointer substream before dereferencing it

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

MITRE
TN

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Check for null pointer of pointer substream before dereferencing it Pointer substream is being dereferenced on the assignment of pointer card
before substream is being null checked with the macro PCM_RUNTIME_CHECK.
Although PCM_RUNTIME_CHECK calls BUG_ON, it still is useful to perform the
the pointer check before card is assigned.

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Check for null pointer of pointer substream before dereferencing it Pointer substream is being dereferenced on the assignment of pointer card before substream is being null checked with the macro PCM_RUNTIME_CHECK. Although PCM_RUNTIME_CHECK calls BUG_ON, it still is useful to perform the the pointer check before card is assigned.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2025-02-26 CVE Reserved
2025-02-26 CVE Published
2025-02-26 CVE Updated
2025-02-27 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (7)

URL	Tag	Source
https://git.kernel.org/stable/c/d4cfb30fce03093ad944e0b44bd8f40bdad5330e	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/f2c68c52898f623fe84518da4606538d193b0cca	2022-06-09
https://git.kernel.org/stable/c/7784d22f81a29df2ec57ca90d54f93a35cbcd1a2	2022-06-09
https://git.kernel.org/stable/c/1f2e28857be1e5c7db39bbc221332215fc5467e3	2022-06-09
https://git.kernel.org/stable/c/b41ef7ad9238c22aa2e142f5ce4ce1a1a0d48123	2022-06-09
https://git.kernel.org/stable/c/011b559be832194f992f73d6c0d5485f5925a10b	2022-04-25
https://git.kernel.org/stable/c/b2421a196cb0911ea95aec1050a0b830464c8fa6	2023-08-30

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 < 5.10.121 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.10.121"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.6 < 5.15.46 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.15.46"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.6 < 5.17.14 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.17.14"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.6 < 5.18.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.18.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.6 < 5.19 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.6 < 5.19"		en		Affected