CVE-2022-49127

In the Linux kernel, the following vulnerability has been resolved: ref_tracker: implement use-after-free detection Whenever ref_tracker_dir_init() is called, mark the struct ref_tracker_dir as dead. Test the dead status from ref_tracker_alloc() and ref_tracker_free() This should detect buggy dev_put()/dev_hold() happening too late in netdevice dismantle process.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/3743c9de303fa36c2e2ca2522ab280c52bcafbd2	Patch
https://git.kernel.org/stable/c/e3ececfe668facd87d920b608349a32607060e66	Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

History

25 Mar 2025, 16:19

Type	Values Removed	Values Added
References	~~() https://git.kernel.org/stable/c/3743c9de303fa36c2e2ca2522ab280c52bcafbd2 -~~	() https://git.kernel.org/stable/c/3743c9de303fa36c2e2ca2522ab280c52bcafbd2 - Patch
References	~~() https://git.kernel.org/stable/c/e3ececfe668facd87d920b608349a32607060e66 -~~	() https://git.kernel.org/stable/c/e3ececfe668facd87d920b608349a32607060e66 - Patch
CPE		cpe:2.3:o:linux:linux_kernel::::::::
Summary		(es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ref_tracker: implementar la detección de use-after-free Siempre que se llama a ref_tracker_dir_init(), se marca la estructura ref_tracker_dir como inactiva. Pruebe el estado inactivo de ref_tracker_alloc() y ref_tracker_free() Esto debería detectar dev_put()/dev_hold() con errores que ocurren demasiado tarde en el proceso de desmantelamiento de netdevice.
First Time		Linux Linux linux Kernel

27 Feb 2025, 19:15

Type	Values Removed	Values Added
CWE		CWE-416
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.8

26 Feb 2025, 07:00

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-02-26 07:00

Updated : 2025-03-25 16:19

NVD link : CVE-2022-49127

Mitre link : CVE-2022-49127

CVE.ORG link : CVE-2022-49127

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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7.8 /10