CVE-2021-47071

MEDIUM

Linux Kernel - Use-After-Free in uio_hv_generic Error Handling

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: uio_hv_generic: Fix a memory leak in error handling paths If 'vmbus_establish_gpadl()' fails, the (recv|send)_gpadl will not be updated and 'hv_uio_cleanup()' in the error handling path will not be able to free the corresponding buffer. In such a case, we need to free the buffer explicitly.

References (4)

Core 4

Scores

CVSS v3 5.5
EPSS 0.0024
EPSS Percentile 14.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-401
Status published
Products (12)
Linux/Linux < 4.20
Linux/Linux 4.20
Linux/Linux 5.10.40 - 5.10.*
Linux/Linux 5.12.7 - 5.12.*
Linux/Linux 5.13
Linux/Linux 5.4.122 - 5.4.*
Linux/Linux cdfa835c6e5e87d145f9f632b58843de97509f2b - 3ee098f96b8b6c1a98f7f97915f8873164e6af9d
Linux/Linux cdfa835c6e5e87d145f9f632b58843de97509f2b - 53486c467e356e06aa37047c984fccd64d78c827
Linux/Linux cdfa835c6e5e87d145f9f632b58843de97509f2b - cdd91637d4ef33e2be19a8e16e72e7d00c996d76
Linux/Linux cdfa835c6e5e87d145f9f632b58843de97509f2b - d84b5e912212b05f6b5bde9f682046accfbe0354
... and 2 more
Published Mar 01, 2024
Tracked Since Feb 18, 2026