{"id":"CVE-2026-64002","summary":"ipv4: free net-\u003eipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: free net-\u003eipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()\n\nipv4_sysctl_exit_net() is currently freeing net-\u003eipv4.sysctl_local_reserved_ports\ntoo soon.\n\nOnly after unregister_net_sysctl_table() we can be sure no threads can possibly\nuse the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports.","modified":"2026-07-22T05:29:37.421536719Z","published":"2026-07-19T14:56:19.495Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64002.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/155f90be5ee8be5b110ebc0b7da33c54c83b0208"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a7f4eefb6e1458431eef9fa20fb363320d185f76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64002.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64002"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"122ff243f5f104194750ecbc76d5946dd1eec934"},{"fixed":"ecf45080a4d3f4526cacb8b14060fe3b49a6913b"},{"fixed":"a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c"},{"fixed":"5b23a2ff379e70b6b9ff744a972b63e1f8f4d996"},{"fixed":"8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57"},{"fixed":"6512c57c4638ddec113bf42439361ba85a12048d"},{"fixed":"a7f4eefb6e1458431eef9fa20fb363320d185f76"},{"fixed":"155f90be5ee8be5b110ebc0b7da33c54c83b0208"},{"fixed":"87a1e0fe7776da7ab411be332b4be58ac8840d10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64002.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.16.0"},{"fixed":"5.10.259"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.210"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.176"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.143"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.93"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.35"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.12"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64002.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}