CVE-2021-47330

tty: serial: 8250: serial_cs: Fix a memory leak in error handling path

Severity Score

3.3

*CVSS v3

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: tty: serial: 8250: serial_cs: Fix a memory leak in error handling path In the probe function, if the final 'serial_config()' fails, 'info' is
leaking. Add a resource handling path to free this memory.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tty: serial: 8250: serial_cs: corrige una pérdida de memoria en la ruta de manejo de errores. En la función de sonda, si el 'serial_config()' final falla, se está perdiendo 'info'. Agregue una ruta de manejo de recursos para liberar esta memoria.

In the Linux kernel, the following vulnerability has been resolved: tty: serial: 8250: serial_cs: Fix a memory leak in error handling path In the probe function, if the final 'serial_config()' fails, 'info' is leaking. Add a resource handling path to free this memory.

*Credits: N/A

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

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-05-21 CVE Reserved
2024-05-21 CVE Published
2024-12-19 CVE Updated
2025-03-29 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (9)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/b5a2799cd62ed30c81b22c23028d9ee374e2138c	2021-07-20
https://git.kernel.org/stable/c/331f5923fce4f45b8170ccf06c529e8eb28f37bc	2021-07-20
https://git.kernel.org/stable/c/34f4590f5ec9859ea9136249f528173d150bd584	2021-07-20
https://git.kernel.org/stable/c/cddee5c287e26f6b2ba5c0ffdfc3a846f2f10461	2021-07-20
https://git.kernel.org/stable/c/ee16bed959862a6de2913f71a04cb563d7237b67	2021-07-20
https://git.kernel.org/stable/c/7a80f71601af015856a0aeb1e3c294037ac3dd32	2021-07-20
https://git.kernel.org/stable/c/c39cf4df19acf0133fa284a8cd83fad42cd13cc2	2021-07-20
https://git.kernel.org/stable/c/b2ef1f5de40342de44fc5355321595f91774dab5	2021-07-20
https://git.kernel.org/stable/c/fad92b11047a748c996ebd6cfb164a63814eeb2e	2021-05-27

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"				< 4.4.276 Search vendor "Linux" for product "Linux Kernel" and version " < 4.4.276"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.9.276 Search vendor "Linux" for product "Linux Kernel" and version " < 4.9.276"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.240 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.240"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.198 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.198"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.134 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.134"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.52 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.52"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.12.19 Search vendor "Linux" for product "Linux Kernel" and version " < 5.12.19"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.13.4 Search vendor "Linux" for product "Linux Kernel" and version " < 5.13.4"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.14 Search vendor "Linux" for product "Linux Kernel" and version " < 5.14"		en		Affected