CVE-2021-47049
Medium
Elevated severity or exploit probability.
CVSS base
8.4
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.2%
14.4th percentile
CISA KEV
Not listed
Weakness / dates
CWE-416
Published 2024-02-28 · modified 2026-08-04
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2024-02-28 — Published (NVD)
- 2026-08-04 — Last modified (NVD)
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.
Affected
References
- https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5
- https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da
- https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f
- https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560
- https://git.kernel.org/stable/c/2728f289b3270b0e273292b46c534421a33bbfd5
- https://git.kernel.org/stable/c/3e9bf43f7f7a46f21ec071cb47be92d0874c48da
- https://git.kernel.org/stable/c/d5c7b42c9f56ca46b286daa537d181bd7f69214f
- https://git.kernel.org/stable/c/f37dd5d1b5d38a79a4f7b8dd7bbb705505f05560