CVE-2022-49668

PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events

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: PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events of_get_child_by_name() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
This function only calls of_node_put() in normal path,
missing it in error paths.
Add missing of_node_put() to avoid refcount leak.

In the Linux kernel, the following vulnerability has been resolved: PM / devfreq: exynos-ppmu: Fix refcount leak in of_get_devfreq_events of_get_child_by_name() returns a node pointer with refcount incremented, we should use of_node_put() on it when done. This function only calls of_node_put() in normal path, missing it in error paths. Add missing of_node_put() to avoid refcount leak.

*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

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* 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
---------- EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (6)

URL	Tag	Source
https://git.kernel.org/stable/c/f262f28c147051e7aa6daaf4fb5996833ffadff4	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/bdecd912e99acfd61507f1720d3f4eed1b3418d8	2022-07-07
https://git.kernel.org/stable/c/e65027fdebbacd40595e96ef7b5d2418f71bddf2	2022-07-07
https://git.kernel.org/stable/c/01121e39ef537289926ae6f5374dce92c796d863	2022-07-07
https://git.kernel.org/stable/c/194781229d4cbc804b8ded13156eb8addce87d6c	2022-07-07
https://git.kernel.org/stable/c/f44b799603a9b5d2e375b0b2d54dd0b791eddfc2	2022-06-29

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"				>= 4.0 < 5.4.204 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.0 < 5.4.204"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.0 < 5.10.129 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.0 < 5.10.129"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.0 < 5.15.53 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.0 < 5.15.53"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.0 < 5.18.10 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.0 < 5.18.10"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.0 < 5.19 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.0 < 5.19"		en		Affected