CVE-2023-53995 (GCVE-0-2023-53995)
Vulnerability from cvelistv5
Published
2025-12-24 10:55
Modified
2026-05-11 19:53
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ipv4: fix one memleak in __inet_del_ifa() I got the below warning when do fuzzing test: unregister_netdevice: waiting for bond0 to become free. Usage count = 2 It can be repoduced via: ip link add bond0 type bond sysctl -w net.ipv4.conf.bond0.promote_secondaries=1 ip addr add 4.117.174.103/0 scope 0x40 dev bond0 ip addr add 192.168.100.111/255.255.255.254 scope 0 dev bond0 ip addr add 0.0.0.4/0 scope 0x40 secondary dev bond0 ip addr del 4.117.174.103/0 scope 0x40 dev bond0 ip link delete bond0 type bond In this reproduction test case, an incorrect 'last_prim' is found in __inet_del_ifa(), as a result, the secondary address(0.0.0.4/0 scope 0x40) is lost. The memory of the secondary address is leaked and the reference of in_device and net_device is leaked. Fix this problem: Look for 'last_prim' starting at location of the deleted IP and inserting the promoted IP into the location of 'last_prim'.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0ff60a45678e67b2547256a636fd00c1667ce4fa
Version: 0ff60a45678e67b2547256a636fd00c1667ce4fa
Version: 0ff60a45678e67b2547256a636fd00c1667ce4fa
Version: 0ff60a45678e67b2547256a636fd00c1667ce4fa
Version: 0ff60a45678e67b2547256a636fd00c1667ce4fa
Version: 0ff60a45678e67b2547256a636fd00c1667ce4fa
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      "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 \u0027last_prim\u0027 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 \u0027last_prim\u0027 starting at location of the deleted IP and inserting\nthe promoted IP into the location of \u0027last_prim\u0027."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:53:15.262Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5624f26a3574500ce23929cb2c9976a0dec9920a"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c8ddcdab1b900bed69cad6beef477fff116289e"
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          "url": "https://git.kernel.org/stable/c/2f1e86014d0cc084886c36a2d77bc620e2d42618"
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          "url": "https://git.kernel.org/stable/c/980f8445479814509a3cd55a8eabaae1c9030a4c"
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          "url": "https://git.kernel.org/stable/c/42652af5360d30b43b06057c193739e7dfb18f42"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac28b1ec6135649b5d78b028e47264cb3ebca5ea"
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      "title": "net: ipv4: fix one memleak in __inet_del_ifa()",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53995",
    "datePublished": "2025-12-24T10:55:32.713Z",
    "dateReserved": "2025-12-24T10:53:46.176Z",
    "dateUpdated": "2026-05-11T19:53:15.262Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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