Buffer overflow in Linux kernel - CVE-2021-47613
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92375
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-47613
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the virtio_i2c_msg_done(), virtio_i2c_prepare_reqs(), virtio_i2c_complete_reqs(), virtio_i2c_xfer() and virtio_i2c_probe() functions in drivers/i2c/busses/i2c-virtio.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2021-47613
Install update from vendor's website.
Linux kernel - addressed in versions 5.15.10, 5.16