Use-after-free in Linux kernel - CVE-2022-49223
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104484
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-2022-49223
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 cxl_decoder_release() and cxl_decoder_alloc() functions in drivers/cxl/core/port.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2022-49223
Install update from vendor's website.
Linux kernel - update to 5.16.19
External References
- https://git.kernel.org/stable/c/49f2dab77a5e1354f5da6ccdc9346a8212697be2
- https://git.kernel.org/stable/c/518bb96367123062b48b0a9842f2864249b565f6
- https://git.kernel.org/stable/c/74be98774dfbc5b8b795db726bd772e735d2edd4
- https://git.kernel.org/stable/c/b0022ca445d5fc4d0c89d15dcd0f855977b22c1d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.19