Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-47049

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
28/02/2024
Last modified:
09/12/2024

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> Drivers: hv: vmbus: Use after free in __vmbus_open()<br /> <br /> The "open_info" variable is added to the &amp;vmbus_connection.chn_msg_list,<br /> but the error handling frees "open_info" without removing it from the<br /> list. This will result in a use after free. First remove it from the<br /> list, and then free it.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.14 (including) 5.10.37 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.11.21 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.12 (including) 5.12.4 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools