SUNRPC: Fix the svc_deferred_event trace class

{
  "id": "7f9b4943e61ba10c9dc304fcfd78e4f29a8ee85e4df99e65d11787aa1b3ef119",
  "url": "https://osv.dev/vulnerability/CVE-2022-49065",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "SUNRPC: Fix the svc_deferred_event trace class",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix the svc_deferred_event trace class Fix a NULL deref crash that occurs when an svc_rqst is deferred while the sunrpc tracing subsystem is enabled. svc_revisit() sets dr->xprt to NULL, so it can't be relied upon in the tracepoint to provide the remote's address. Unfortunately we can't revert the \"svc_deferred_class\" hunk in commit ece200ddd54b (\"sunrpc: Save remote presentation address in svc_xprt for trace events\") because there is now a specific check of event format specifiers for unsafe dereferences. The warning that check emits is: event svc_defer_recv has unsafe dereference of argument 1 A \"%pISpc\" format specifier with a \"struct sockaddr *\" is indeed flagged by this check. Instead, take the brute-force approach used by the svcrdma_qp_error tracepoint. Convert the dr::addr field into a presentation address in the TP_fast_assign() arm of the trace event, and store that as a string. This fix can be backported to -stable kernels. In the meantime, commit c6ced22997ad (\"tracing: Update print fmt check to handle new __get_sockaddr() macro\") is now in v5.18, so this wonky fix can be replaced with __sockaddr() and friends properly during the v5.19 merge window.",
    "evidence": "osv:CVE-2022-49065",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.112",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.35",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.17.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-49065",
      "aliases": [
        "CVE-2022-49065"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                },
                {
                  "fixed": "726ae7300fcc25fefa46d188cc07eb16dc908f9e"
                },
                {
                  "fixed": "c2456f470eea3bd06574d988bf6089e7c3f4c5cc"
                },
                {
                  "fixed": "4d5004451ab2218eab94a30e1841462c9316ba19"
                }
              ]
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49065.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.17.0"
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                  "fixed": "5.10.112"
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              "type": "ECOSYSTEM",
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                  "introduced": "5.11.0"
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                {
                  "fixed": "5.15.35"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "5.16.0"
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                {
                  "fixed": "5.17.4"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49065.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.930860641Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/4d5004451ab2218eab94a30e1841462c9316ba19",
        "https://git.kernel.org/stable/c/726ae7300fcc25fefa46d188cc07eb16dc908f9e",
        "https://git.kernel.org/stable/c/85ee17ca21cf92989e8c923e3ea4514c291e9d38",
        "https://git.kernel.org/stable/c/c2456f470eea3bd06574d988bf6089e7c3f4c5cc",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49065.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-49065",
        "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/2022/49xxx/CVE-2022-49065.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-49065",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 490323,
  "published_at": "2025-02-26T01:54:33.881+00:00"
}