#VU115377 Use-after-free in Linux kernel - CVE-2022-50320
Published: September 16, 2025 / Updated: September 22, 2025
Vulnerability identifier: #VU115377
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2022-50320
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the fpdt_process_subtable() function in drivers/acpi/acpi_fpdt.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/16046a716c8e1f447909bec9b478d58e6e25e513
- https://git.kernel.org/stable/c/211391bf04b3c74e250c566eeff9cf808156c693
- https://git.kernel.org/stable/c/30eca146c89d216dda95868ce00a2d35cf73d5a4
- https://git.kernel.org/stable/c/90bfc9ae875dfbed2e6089516520204cd431dba3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.17