#VU111449 Use-after-free in Linux kernel - CVE-2022-49995
Published: June 19, 2025 / Updated: June 21, 2025
Vulnerability identifier: #VU111449
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-2022-49995
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 wb_inode_writeback_start() and wb_inode_writeback_end() functions in mm/page-writeback.c, within the wb_wakeup_delayed() and cgwb_remove_from_bdi_list() functions in mm/backing-dev.c, within the inode_io_list_move_locked(), wb_queue_work() and get_next_work_item() functions in fs/fs-writeback.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.