{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/9p/trans_fd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "43bbadb7e4636dc02f6a283c2a39e6438e6173cd",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "717b9b4f38703d7f5293059e3a242d16f76fa045",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "296ab4a813841ba1d5f40b03190fd1bd8f25aab0",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/9p/trans_fd.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/9p: use a dedicated spinlock for trans_fd\n\nShamelessly copying the explanation from Tetsuo Handa\u0027s suggested\npatch[1] (slightly reworded):\nsyzbot is reporting inconsistent lock state in p9_req_put()[2],\nfor p9_tag_remove() from p9_req_put() from IRQ context is using\nspin_lock_irqsave() on \"struct p9_client\"-\u003elock but trans_fd\n(not from IRQ context) is using spin_lock().\n\nSince the locks actually protect different things in client.c and in\ntrans_fd.c, just replace trans_fd.c\u0027s lock by a new one specific to the\ntransport (client.c\u0027s protect the idr for fid/tag allocations,\nwhile trans_fd.c\u0027s protects its own req list and request status field\nthat acts as the transport\u0027s state machine)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-01T14:09:04.896Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/43bbadb7e4636dc02f6a283c2a39e6438e6173cd"
        },
        {
          "url": "https://git.kernel.org/stable/c/717b9b4f38703d7f5293059e3a242d16f76fa045"
        },
        {
          "url": "https://git.kernel.org/stable/c/296ab4a813841ba1d5f40b03190fd1bd8f25aab0"
        }
      ],
      "title": "net/9p: use a dedicated spinlock for trans_fd",
      "x_generator": {
        "engine": "bippy-1.1.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49765",
    "datePublished": "2025-05-01T14:09:04.896Z",
    "dateReserved": "2025-04-16T07:17:33.804Z",
    "dateUpdated": "2025-05-01T14:09:04.896Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49765\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:15:59.277\",\"lastModified\":\"2025-05-02T13:53:20.943\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/9p: use a dedicated spinlock for trans_fd\\n\\nShamelessly copying the explanation from Tetsuo Handa\u0027s suggested\\npatch[1] (slightly reworded):\\nsyzbot is reporting inconsistent lock state in p9_req_put()[2],\\nfor p9_tag_remove() from p9_req_put() from IRQ context is using\\nspin_lock_irqsave() on \\\"struct p9_client\\\"-\u003elock but trans_fd\\n(not from IRQ context) is using spin_lock().\\n\\nSince the locks actually protect different things in client.c and in\\ntrans_fd.c, just replace trans_fd.c\u0027s lock by a new one specific to the\\ntransport (client.c\u0027s protect the idr for fid/tag allocations,\\nwhile trans_fd.c\u0027s protects its own req list and request status field\\nthat acts as the transport\u0027s state machine)\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/9p: uso de un spinlock dedicado para trans_fd. Copiando descaradamente la explicaci\u00f3n del parche sugerido por Tetsuo Handa[1] (ligeramente reformulada): syzbot reporta un estado de bloqueo inconsistente en p9_req_put()[2], para p9_tag_remove() desde p9_req_put() desde el contexto IRQ, se usa spin_lock_irqsave() en \\\"struct p9_client\\\"-\u0026gt;lock, pero trans_fd (no desde el contexto IRQ) usa spin_lock(). Dado que los bloqueos protegen elementos diferentes en client.c y en trans_fd.c, simplemente reemplace el bloqueo de trans_fd.c por uno nuevo espec\u00edfico para el transporte (el de client.c protege el IDR para las asignaciones de FID/etiqueta, mientras que el de trans_fd.c protege su propia lista de solicitudes y el campo de estado de la solicitud, que act\u00faa como la m\u00e1quina de estados del transporte).\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/296ab4a813841ba1d5f40b03190fd1bd8f25aab0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/43bbadb7e4636dc02f6a283c2a39e6438e6173cd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/717b9b4f38703d7f5293059e3a242d16f76fa045\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}