CVE-2024-53212
Vulnerability from cvelistv5
Published
2024-12-27 13:49
Modified
2025-01-20 06:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netlink: fix false positive warning in extack during dumps Commit under fixes extended extack reporting to dumps. It works under normal conditions, because extack errors are usually reported during ->start() or the first ->dump(), it's quite rare that the dump starts okay but fails later. If the dump does fail later, however, the input skb will already have the initiating message pulled, so checking if bad attr falls within skb->data will fail. Switch the check to using nlh, which is always valid. syzbot found a way to hit that scenario by filling up the receive queue. In this case we initiate a dump but don't call ->dump() until there is read space for an skb. WARNING: CPU: 1 PID: 5845 at net/netlink/af_netlink.c:2210 netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209 RIP: 0010:netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209 Call Trace: <TASK> netlink_dump_done+0x513/0x970 net/netlink/af_netlink.c:2250 netlink_dump+0x91f/0xe10 net/netlink/af_netlink.c:2351 netlink_recvmsg+0x6bb/0x11d0 net/netlink/af_netlink.c:1983 sock_recvmsg_nosec net/socket.c:1051 [inline] sock_recvmsg+0x22f/0x280 net/socket.c:1073 __sys_recvfrom+0x246/0x3d0 net/socket.c:2267 __do_sys_recvfrom net/socket.c:2285 [inline] __se_sys_recvfrom net/socket.c:2281 [inline] __x64_sys_recvfrom+0xde/0x100 net/socket.c:2281 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff37dd17a79
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/28af028a71371df5fcbf807fd4444bba8d0c33cc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3bf39fa849ab8ed52abb6715922e6102d3df9f97
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6406d0ce0414b807af5d2a4b781c3f3ee52b8a4d
Impacted products
Vendor Product Version
Linux Linux Version: 8af4f60472fce1f22db5068107b37bcc1a65eabd
Version: 8af4f60472fce1f22db5068107b37bcc1a65eabd
Version: 8af4f60472fce1f22db5068107b37bcc1a65eabd
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   Linux Linux Version: 6.10
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netlink/af_netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6406d0ce0414b807af5d2a4b781c3f3ee52b8a4d",
              "status": "affected",
              "version": "8af4f60472fce1f22db5068107b37bcc1a65eabd",
              "versionType": "git"
            },
            {
              "lessThan": "28af028a71371df5fcbf807fd4444bba8d0c33cc",
              "status": "affected",
              "version": "8af4f60472fce1f22db5068107b37bcc1a65eabd",
              "versionType": "git"
            },
            {
              "lessThan": "3bf39fa849ab8ed52abb6715922e6102d3df9f97",
              "status": "affected",
              "version": "8af4f60472fce1f22db5068107b37bcc1a65eabd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netlink/af_netlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: fix false positive warning in extack during dumps\n\nCommit under fixes extended extack reporting to dumps.\nIt works under normal conditions, because extack errors are\nusually reported during -\u003estart() or the first -\u003edump(),\nit\u0027s quite rare that the dump starts okay but fails later.\nIf the dump does fail later, however, the input skb will\nalready have the initiating message pulled, so checking\nif bad attr falls within skb-\u003edata will fail.\n\nSwitch the check to using nlh, which is always valid.\n\nsyzbot found a way to hit that scenario by filling up\nthe receive queue. In this case we initiate a dump\nbut don\u0027t call -\u003edump() until there is read space for\nan skb.\n\nWARNING: CPU: 1 PID: 5845 at net/netlink/af_netlink.c:2210 netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209\nRIP: 0010:netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209\nCall Trace:\n \u003cTASK\u003e\n netlink_dump_done+0x513/0x970 net/netlink/af_netlink.c:2250\n netlink_dump+0x91f/0xe10 net/netlink/af_netlink.c:2351\n netlink_recvmsg+0x6bb/0x11d0 net/netlink/af_netlink.c:1983\n sock_recvmsg_nosec net/socket.c:1051 [inline]\n sock_recvmsg+0x22f/0x280 net/socket.c:1073\n __sys_recvfrom+0x246/0x3d0 net/socket.c:2267\n __do_sys_recvfrom net/socket.c:2285 [inline]\n __se_sys_recvfrom net/socket.c:2281 [inline]\n __x64_sys_recvfrom+0xde/0x100 net/socket.c:2281\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n RIP: 0033:0x7ff37dd17a79"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-20T06:21:21.015Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6406d0ce0414b807af5d2a4b781c3f3ee52b8a4d"
        },
        {
          "url": "https://git.kernel.org/stable/c/28af028a71371df5fcbf807fd4444bba8d0c33cc"
        },
        {
          "url": "https://git.kernel.org/stable/c/3bf39fa849ab8ed52abb6715922e6102d3df9f97"
        }
      ],
      "title": "netlink: fix false positive warning in extack during dumps",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53212",
    "datePublished": "2024-12-27T13:49:57.904Z",
    "dateReserved": "2024-11-19T17:17:25.021Z",
    "dateUpdated": "2025-01-20T06:21:21.015Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-53212\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T14:15:29.130\",\"lastModified\":\"2024-12-27T14:15:29.130\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetlink: fix false positive warning in extack during dumps\\n\\nCommit under fixes extended extack reporting to dumps.\\nIt works under normal conditions, because extack errors are\\nusually reported during -\u003estart() or the first -\u003edump(),\\nit\u0027s quite rare that the dump starts okay but fails later.\\nIf the dump does fail later, however, the input skb will\\nalready have the initiating message pulled, so checking\\nif bad attr falls within skb-\u003edata will fail.\\n\\nSwitch the check to using nlh, which is always valid.\\n\\nsyzbot found a way to hit that scenario by filling up\\nthe receive queue. In this case we initiate a dump\\nbut don\u0027t call -\u003edump() until there is read space for\\nan skb.\\n\\nWARNING: CPU: 1 PID: 5845 at net/netlink/af_netlink.c:2210 netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209\\nRIP: 0010:netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209\\nCall Trace:\\n \u003cTASK\u003e\\n netlink_dump_done+0x513/0x970 net/netlink/af_netlink.c:2250\\n netlink_dump+0x91f/0xe10 net/netlink/af_netlink.c:2351\\n netlink_recvmsg+0x6bb/0x11d0 net/netlink/af_netlink.c:1983\\n sock_recvmsg_nosec net/socket.c:1051 [inline]\\n sock_recvmsg+0x22f/0x280 net/socket.c:1073\\n __sys_recvfrom+0x246/0x3d0 net/socket.c:2267\\n __do_sys_recvfrom net/socket.c:2285 [inline]\\n __se_sys_recvfrom net/socket.c:2281 [inline]\\n __x64_sys_recvfrom+0xde/0x100 net/socket.c:2281\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n RIP: 0033:0x7ff37dd17a79\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/28af028a71371df5fcbf807fd4444bba8d0c33cc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3bf39fa849ab8ed52abb6715922e6102d3df9f97\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6406d0ce0414b807af5d2a4b781c3f3ee52b8a4d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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