Use-after-free in Linux kernel - CVE-2022-48754
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92898
CSH Severity: 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-2022-48754
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 phy_detach() function in drivers/net/phy/phy_device.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/67d271760b037ce0806d687ee6057edc8afd4205
- https://git.kernel.org/stable/c/f39027cbada43b33566c312e6be3db654ca3ad17
- https://git.kernel.org/stable/c/bd024e36f68174b1793906c39ca16cee0c9295c2
- https://git.kernel.org/stable/c/aefaccd19379d6c4620269a162bfb88ff687f289
- https://git.kernel.org/stable/c/cb2fab10fc5e7a3aa1bb0a68a3abdcf3e37852af
- https://git.kernel.org/stable/c/cbda1b16687580d5beee38273f6241ae3725960c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.228
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.96
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.176