Use-after-free in Linux kernel - CVE-2022-48892
Published: August 21, 2024 / Updated: May 12, 2025
Vulnerability identifier: #VU96333
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-2022-48892
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 do_set_cpus_allowed() function in kernel/sched/core.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
How to mitigate CVE-2022-48892
Install update from vendor's website.
Linux kernel - addressed in versions 5.15.89, 6.1.7, 6.2
External References
- https://git.kernel.org/stable/c/b22faa21b6230d5eccd233e1b7e0026a5002b287
- https://git.kernel.org/stable/c/7b5cc7fd1789ea5dbb942c9f8207b076d365badc
- https://git.kernel.org/stable/c/87ca4f9efbd7cc649ff43b87970888f2812945b8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.89
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2