RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed

{
  "id": "e50e67076bf55c4a37dcb32b7cafa7aacab68635563e6e09a0bca73fb60e2238",
  "url": "https://osv.dev/vulnerability/CVE-2022-50885",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed There is a null-ptr-deref when mount.cifs over rdma: BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe] Read of size 8 at addr 0000000000000018 by task mount.cifs/3046 CPU: 2 PID: 3046 Comm: mount.cifs Not tainted 6.1.0-rc5+ #62 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc3 Call Trace: dump_stack_lvl+0x34/0x44 kasan_report+0xad/0x130 rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe] execute_in_process_context+0x25/0x90 __rxe_cleanup+0x101/0x1d0 [rdma_rxe] rxe_create_qp+0x16a/0x180 [rdma_rxe] create_qp.part.0+0x27d/0x340 ib_create_qp_kernel+0x73/0x160 rdma_create_qp+0x100/0x230 _smbd_get_connection+0x752/0x20f0 smbd_get_connection+0x21/0x40 cifs_get_tcp_session+0x8ef/0xda0 mount_get_conns+0x60/0x750 cifs_mount+0x103/0xd00 cifs_smb3_do_mount+0x1dd/0xcb0 smb3_get_tree+0x1d5/0x300 vfs_get_tree+0x41/0xf0 path_mount+0x9b3/0xdd0 __x64_sys_mount+0x190/0x1d0 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 The root cause of the issue is the socket create failed in rxe_qp_init_req(). So move the reset rxe_qp_do_cleanup() after the NULL ptr check.",
    "evidence": "osv:CVE-2022-50885",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "evidence": "/affected/1/ranges"
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          {
            "value": "6.1.2",
            "evidence": "/affected/1/ranges"
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        "affected_versions": []
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    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-50885",
      "aliases": [
        "CVE-2022-50885"
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      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
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      "modified": "2026-10-28T02:30:51.699548910Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/5b924632d84a60bc0c7fe6e9bbbce99d03908957",
        "https://git.kernel.org/stable/c/6bb5a62bfd624039b05157745c234068508393a9",
        "https://git.kernel.org/stable/c/7340ca9f782be6fbe3f64a134dc112772764f766",
        "https://git.kernel.org/stable/c/821f9a18210f6b9fd6792471714c799607b25db4",
        "https://git.kernel.org/stable/c/bd7106a6004f1077a365ca7f5a99c7a708e20714",
        "https://git.kernel.org/stable/c/ee24de095569935eba600f7735e8e8ddea5b418e",
        "https://git.kernel.org/stable/c/f64f08b9e6fb305a25dd75329e06ae342b9ce336",
        "https://git.kernel.org/stable/c/f67376d801499f4fa0838c18c1efcad8840e550d",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50885.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50885",
        "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/2022/50xxx/CVE-2022-50885.json"
      }
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    "related_cves": [
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        "value": "CVE-2022-50885",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520074,
  "published_at": "2025-12-30T12:34:12.093+00:00"
}