SB20250916114 - Use-after-free in Linux kernel acpi driver
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB20250916114
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-50320)
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 website.
References
- 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