{"id":"CVE-2023-53995","summary":"net: ipv4: fix one memleak in __inet_del_ifa()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ipv4: fix one memleak in __inet_del_ifa()\n\nI got the below warning when do fuzzing test:\nunregister_netdevice: waiting for bond0 to become free. Usage count = 2\n\nIt can be repoduced via:\n\nip link add bond0 type bond\nsysctl -w net.ipv4.conf.bond0.promote_secondaries=1\nip addr add 4.117.174.103/0 scope 0x40 dev bond0\nip addr add 192.168.100.111/255.255.255.254 scope 0 dev bond0\nip addr add 0.0.0.4/0 scope 0x40 secondary dev bond0\nip addr del 4.117.174.103/0 scope 0x40 dev bond0\nip link delete bond0 type bond\n\nIn this reproduction test case, an incorrect 'last_prim' is found in\n__inet_del_ifa(), as a result, the secondary address(0.0.0.4/0 scope 0x40)\nis lost. The memory of the secondary address is leaked and the reference of\nin_device and net_device is leaked.\n\nFix this problem:\nLook for 'last_prim' starting at location of the deleted IP and inserting\nthe promoted IP into the location of 'last_prim'.","modified":"2026-03-31T17:29:40.424378Z","published":"2025-12-24T10:55:32.713Z","related":["SUSE-SU-2026:0278-1","SUSE-SU-2026:0281-1","SUSE-SU-2026:0293-1","SUSE-SU-2026:0315-1","SUSE-SU-2026:20477-1","SUSE-SU-2026:20498-1","SUSE-SU-2026:20845-1","SUSE-SU-2026:20876-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53995.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2f1e86014d0cc084886c36a2d77bc620e2d42618"},{"type":"WEB","url":"https://git.kernel.org/stable/c/42652af5360d30b43b06057c193739e7dfb18f42"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5624f26a3574500ce23929cb2c9976a0dec9920a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7c8ddcdab1b900bed69cad6beef477fff116289e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/980f8445479814509a3cd55a8eabaae1c9030a4c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ac28b1ec6135649b5d78b028e47264cb3ebca5ea"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53995.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53995"},{"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":"0ff60a45678e67b2547256a636fd00c1667ce4fa"},{"fixed":"5624f26a3574500ce23929cb2c9976a0dec9920a"},{"fixed":"7c8ddcdab1b900bed69cad6beef477fff116289e"},{"fixed":"2f1e86014d0cc084886c36a2d77bc620e2d42618"},{"fixed":"980f8445479814509a3cd55a8eabaae1c9030a4c"},{"fixed":"42652af5360d30b43b06057c193739e7dfb18f42"},{"fixed":"ac28b1ec6135649b5d78b028e47264cb3ebca5ea"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53995.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.15"},{"fixed":"5.4.257"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.195"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.132"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.54"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.5.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-53995.json"}}],"schema_version":"1.7.5"}