CVE-2021-47049

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-47049
In the Linux kernel, the following vulnerability has been resolved: Drivers: hv: vmbus: Use after free in __vmbus_open() The "open_info" variable is added to the &vmbus_connection.chn_msg_list, but the error handling frees "open_info" without removing it from the list. This will result in a use after free. First remove it from the list, and then free it.

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/2728f289b3270b0e273292b46c534421a33bbfd5 Patch
https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da Patch
https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f Patch
https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 Patch
https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 Patch
https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da Patch
https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f Patch
https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

09 Dec 2024, 19:06

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
References () https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 - () https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 - Patch
References () https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da - () https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da - Patch
References () https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f - () https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f - Patch
References () https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 - () https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-416
First Time Linux linux Kernel
Linux

21 Nov 2024, 06:35

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 - () https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5 -
References () https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da - () https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da -
References () https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f - () https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f -
References () https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 - () https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560 -
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Controladores: hv: vmbus: Usar después de liberar en __vmbus_open() La variable "open_info" se agrega a &vmbus_connection.chn_msg_list, pero el manejo de errores libera "open_info" sin eliminarlo de la lista. Esto resultará en un uso posterior gratuito. Primero elimínelo de la lista y luego libérelo.

28 Feb 2024, 09:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-02-28 09:15

Updated : 2024-12-09 19:06

NVD link : CVE-2021-47049

Mitre link : CVE-2021-47049

CVE.ORG link : CVE-2021-47049

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free