Use-after-free in Linux kernel - CVE-2022-50064
Published: June 19, 2025 / Updated: June 21, 2025
Vulnerability identifier: #VU111453
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-2022-50064
CWE-ID: CWE-416
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 a use-after-free error within the virtblk_result(), virtio_queue_rqs(), virtblk_complete_batch() and virtblk_poll() functions in drivers/block/virtio_blk.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2022-50064
Install update from vendor's repository.
Linux kernel - addressed in versions 5.19.4, 6.0