Use-after-free in Linux kernel - CVE-2022-50000
Published: June 19, 2025 / Updated: June 21, 2025
Vulnerability identifier: #VU111450
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-2022-50000
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 nf_flow_offload_stats() function in net/netfilter/nf_flow_table_offload.c, within the nf_flow_table_free() function in net/netfilter/nf_flow_table_core.c. A local user can escalate privileges on the system.
Affected software
Linux kernel
Red Hat Enterprise Linux Server - AUS
kernel (Red Hat package)
Red Hat Enterprise Linux Server - AUS
kernel (Red Hat package)
How to mitigate CVE-2022-50000
Install update from vendor's repository.
Linux kernel - addressed in versions 5.15.64, 5.19.6, 6.0
kernel (Red Hat package) - update to 4.18.0-305.172.1.el8_4
kernel (Red Hat package) - update to 4.18.0-305.172.1.el8_4
External References
- https://git.kernel.org/stable/c/89e135a36a9eb81412b5459df94a80995ce62eef
- https://git.kernel.org/stable/c/8fbdec08dbf7d7ab8e35bdc65eb4394bc82d1e26
- https://git.kernel.org/stable/c/9afb4b27349a499483ae0134282cefd0c90f480f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.64
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0