{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53995",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-12-24T10:53:46.176Z",
        "datePublished": "2025-12-24T10:55:32.713Z",
        "dateUpdated": "2026-05-11T19:53:15.262Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T19:53:15.262Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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'."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv4/devinet.c"
                    ],
                    "versions": [
                        {
                            "version": "0ff60a45678e67b2547256a636fd00c1667ce4fa",
                            "lessThan": "5624f26a3574500ce23929cb2c9976a0dec9920a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0ff60a45678e67b2547256a636fd00c1667ce4fa",
                            "lessThan": "7c8ddcdab1b900bed69cad6beef477fff116289e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0ff60a45678e67b2547256a636fd00c1667ce4fa",
                            "lessThan": "2f1e86014d0cc084886c36a2d77bc620e2d42618",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0ff60a45678e67b2547256a636fd00c1667ce4fa",
                            "lessThan": "980f8445479814509a3cd55a8eabaae1c9030a4c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0ff60a45678e67b2547256a636fd00c1667ce4fa",
                            "lessThan": "42652af5360d30b43b06057c193739e7dfb18f42",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "0ff60a45678e67b2547256a636fd00c1667ce4fa",
                            "lessThan": "ac28b1ec6135649b5d78b028e47264cb3ebca5ea",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ipv4/devinet.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.257",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.195",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.132",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.54",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5.4",
                            "lessThanOrEqual": "6.5.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.15",
                                    "versionEndExcluding": "5.4.257"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.15",
                                    "versionEndExcluding": "5.10.195"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.15",
                                    "versionEndExcluding": "6.5.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.15",
                                    "versionEndExcluding": "6.6"
                                }
                            ]
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                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/5624f26a3574500ce23929cb2c9976a0dec9920a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7c8ddcdab1b900bed69cad6beef477fff116289e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2f1e86014d0cc084886c36a2d77bc620e2d42618"
                },
                {
                    "url": "https://git.kernel.org/stable/c/980f8445479814509a3cd55a8eabaae1c9030a4c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/42652af5360d30b43b06057c193739e7dfb18f42"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ac28b1ec6135649b5d78b028e47264cb3ebca5ea"
                }
            ],
            "title": "net: ipv4: fix one memleak in __inet_del_ifa()",
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}