// For flags

CVE-2021-47258

scsi: core: Fix error handling of scsi_host_alloc()

Severity Score

3.3
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix error handling of scsi_host_alloc() After device is initialized via device_initialize(), or its name is set via
dev_set_name(), the device has to be freed via put_device(). Otherwise
device name will be leaked because it is allocated dynamically in
dev_set_name(). Fix the leak by replacing kfree() with put_device(). Since
scsi_host_dev_release() properly handles IDA and kthread removal, remove
special-casing these from the error handling as well.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: core: corrige el manejo de errores de scsi_host_alloc(). Después de que el dispositivo se inicializa mediante device_initialize(), o su nombre se establece mediante dev_set_name(), el dispositivo debe liberarse mediante put_device (). De lo contrario, se filtrará el nombre del dispositivo porque se asigna dinámicamente en dev_set_name(). Solucione la fuga reemplazando kfree() con put_device(). Dado que scsi_host_dev_release() maneja adecuadamente la eliminación de IDA y kthread, elimine también estas mayúsculas y minúsculas especiales del manejo de errores.

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix error handling of scsi_host_alloc() After device is initialized via device_initialize(), or its name is set via dev_set_name(), the device has to be freed via put_device(). Otherwise device name will be leaked because it is allocated dynamically in dev_set_name(). Fix the leak by replacing kfree() with put_device(). Since scsi_host_dev_release() properly handles IDA and kthread removal, remove special-casing these from the error handling as well.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Attack Vector
Local
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-04-10 CVE Reserved
  • 2024-05-21 CVE Published
  • 2024-12-19 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
CAPEC
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"
< 4.9.273
Search vendor "Linux" for product "Linux Kernel" and version " < 4.9.273"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
< 4.14.237
Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.237"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
< 4.19.195
Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.195"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
< 5.4.126
Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.126"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
< 5.10.44
Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.44"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
< 5.12.11
Search vendor "Linux" for product "Linux Kernel" and version " < 5.12.11"
en
Affected
Linux
Search vendor "Linux"
Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
< 5.13
Search vendor "Linux" for product "Linux Kernel" and version " < 5.13"
en
Affected