CVE-2026-64002
ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()
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Description
In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon. Only after unregister_net_sysctl_table() we can be sure no threads can possibly use the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913b
- https://git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c
- https://git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996
- https://git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57
- https://git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048d
References (8)
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