Use-after-free in Linux kernel - CVE-2022-49968
Published: June 19, 2025 / Updated: June 21, 2025
Vulnerability identifier: #VU111446
CSH Severity: Low
CVSS v4.0: 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-2022-49968
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability 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 r871x_internal_cmd_hdl() and cmd_hdl_filter() functions in drivers/staging/rtl8712/rtl8712_cmd.c. A local user can escalate privileges on the system.
How to mitigate CVE-2022-49968
Install update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/15f3b89bd521d5770d36a61fc04a77c293138ba6
- https://git.kernel.org/stable/c/23a29932715ca43bceb2eae1bdb770995afe7271
- https://git.kernel.org/stable/c/9f8558c5c642c62c450c98c99b7d18a709fff485
- https://git.kernel.org/stable/c/afe7116f6d3b888778ed6d95e3cf724767b9aedf
- https://git.kernel.org/stable/c/bed12d7531df1417fc92c691999ff95e03835008
- https://git.kernel.org/stable/c/dede80aaf01f4b6e8657d23726cb4a3da226ec4c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.258