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CVE-2021-47049

kernel: Drivers: hv: vmbus: Use after free in __vmbus_open()

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Severity

Low

Red Hat Product Security

6

CVSS 3.1

Review impact separately from score.

Published · February 28, 2024

Updated · August 5, 2026

Description

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.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 6
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

CWE-416 · Use After Free