High severity7.8NVD Advisory· Published Jul 19, 2026· Updated Jul 30, 2026
CVE-2026-64002
CVE-2026-64002
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 products
2Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/155f90be5ee8be5b110ebc0b7da33c54c83b0208nvd
- git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996nvd
- git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048dnvd
- git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10nvd
- git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57nvd
- git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06cnvd
- git.kernel.org/stable/c/a7f4eefb6e1458431eef9fa20fb363320d185f76nvd
- git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913bnvd
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