tipc: fix kernel panic when enabling bearer

{
  "id": "1c2f8a560f9d87e5f451ee6a5e2b72197f8247b111bf7968546c218b537b9a66",
  "url": "https://osv.dev/vulnerability/CVE-2022-48865",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "tipc: fix kernel panic when enabling bearer",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: tipc: fix kernel panic when enabling bearer When enabling a bearer on a node, a kernel panic is observed: [ 4.498085] RIP: 0010:tipc_mon_prep+0x4e/0x130 [tipc] ... [ 4.520030] Call Trace: [ 4.520689] [ 4.521236] tipc_link_build_proto_msg+0x375/0x750 [tipc] [ 4.522654] tipc_link_build_state_msg+0x48/0xc0 [tipc] [ 4.524034] __tipc_node_link_up+0xd7/0x290 [tipc] [ 4.525292] tipc_rcv+0x5da/0x730 [tipc] [ 4.526346] ? __netif_receive_skb_core+0xb7/0xfc0 [ 4.527601] tipc_l2_rcv_msg+0x5e/0x90 [tipc] [ 4.528737] __netif_receive_skb_list_core+0x20b/0x260 [ 4.530068] netif_receive_skb_list_internal+0x1bf/0x2e0 [ 4.531450] ? dev_gro_receive+0x4c2/0x680 [ 4.532512] napi_complete_done+0x6f/0x180 [ 4.533570] virtnet_poll+0x29c/0x42e [virtio_net] ... The node in question is receiving activate messages in another thread after changing bearer status to allow message sending/ receiving in current thread: thread 1 | thread 2 -------- | -------- | tipc_enable_bearer() | test_and_set_bit_lock() | tipc_bearer_xmit_skb() | | tipc_l2_rcv_msg() | tipc_rcv() | __tipc_node_link_up() | tipc_link_build_state_msg() | tipc_link_build_proto_msg() | tipc_mon_prep() | { | ... | // null-pointer dereference | u16 gen = mon->dom_gen; | ... | } // Not being executed yet | tipc_mon_create() | { | ... | // allocate | mon = kzalloc(); | ... | } | Monitoring pointer in thread 2 is dereferenced before monitoring data is allocated in thread 1. This caus",
    "evidence": "osv:CVE-2022-48865",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.106",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.29",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.16.15",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-48865",
      "aliases": [
        "CVE-2022-48865"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "35c55c9877f8de0ab129fa1a309271d0ecc868b9"
                },
                {
                  "fixed": "2de76d37d4a6dca9b96ea51da24d4290e6cfa1a5"
                },
                {
                  "fixed": "f96dc3adb9a97b8f3dfdb88796483491a3006b71"
                },
                {
                  "fixed": "f4f59fdbc748805b08c13dae14c01f0518c77c94"
                },
                {
                  "fixed": "be4977b847f5d5cedb64d50eaaf2218c3a55a3a3"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48865.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.8.0"
                },
                {
                  "fixed": "5.10.106"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.29"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.16.15"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48865.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.539943850Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/2de76d37d4a6dca9b96ea51da24d4290e6cfa1a5",
        "https://git.kernel.org/stable/c/be4977b847f5d5cedb64d50eaaf2218c3a55a3a3",
        "https://git.kernel.org/stable/c/f4f59fdbc748805b08c13dae14c01f0518c77c94",
        "https://git.kernel.org/stable/c/f96dc3adb9a97b8f3dfdb88796483491a3006b71",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48865.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-48865",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48865.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-48865",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 521045,
  "published_at": "2024-07-16T12:25:27.843+00:00"
}