CVE-2022-50745 (GCVE-0-2022-50745)
Vulnerability from cvelistv5
Published
2025-12-24 13:05
Modified
2025-12-24 13:05
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: staging: media: tegra-video: fix device_node use after free At probe time this code path is followed: * tegra_csi_init * tegra_csi_channels_alloc * for_each_child_of_node(node, channel) -- iterates over channels * automatically gets 'channel' * tegra_csi_channel_alloc() * saves into chan->of_node a pointer to the channel OF node * automatically gets and puts 'channel' * now the node saved in chan->of_node has refcount 0, can disappear * tegra_csi_channels_init * iterates over channels * tegra_csi_channel_init -- uses chan->of_node After that, chan->of_node keeps storing the node until the device is removed. of_node_get() the node and of_node_put() it during teardown to avoid any risk.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1ebaeb09830f36c1111b72a95420814225bd761c
Version: 1ebaeb09830f36c1111b72a95420814225bd761c
Version: 1ebaeb09830f36c1111b72a95420814225bd761c
Version: 1ebaeb09830f36c1111b72a95420814225bd761c
Version: 1ebaeb09830f36c1111b72a95420814225bd761c
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/staging/media/tegra-video/csi.c"
          ],
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          "vendor": "Linux",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "5.10"
            },
            {
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              "version": "0",
              "versionType": "semver"
            },
            {
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              "version": "5.10.163",
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              "version": "5.15.87",
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              "lessThanOrEqual": "6.0.*",
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              "version": "6.0.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.4",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: media: tegra-video: fix device_node use after free\n\nAt probe time this code path is followed:\n\n * tegra_csi_init\n   * tegra_csi_channels_alloc\n     * for_each_child_of_node(node, channel) -- iterates over channels\n       * automatically gets \u0027channel\u0027\n         * tegra_csi_channel_alloc()\n           * saves into chan-\u003eof_node a pointer to the channel OF node\n       * automatically gets and puts \u0027channel\u0027\n       * now the node saved in chan-\u003eof_node has refcount 0, can disappear\n   * tegra_csi_channels_init\n     * iterates over channels\n       * tegra_csi_channel_init -- uses chan-\u003eof_node\n\nAfter that, chan-\u003eof_node keeps storing the node until the device is\nremoved.\n\nof_node_get() the node and of_node_put() it during teardown to avoid any\nrisk."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T13:05:41.858Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/5451efb2ca30f3c42b9efb8327ce35b62870dbd3"
        },
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          "url": "https://git.kernel.org/stable/c/ce50c612458091d926ccb05d7db11d9f93532db2"
        },
        {
          "url": "https://git.kernel.org/stable/c/6512c9498fcb97e7c760e3ef86b2272f2c0f765f"
        },
        {
          "url": "https://git.kernel.org/stable/c/0fd003d3c708c80350a815eaf37b8e1114b976cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/c4d344163c3a7f90712525f931a6c016bbb35e18"
        }
      ],
      "title": "staging: media: tegra-video: fix device_node use after free",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50745",
    "datePublished": "2025-12-24T13:05:41.858Z",
    "dateReserved": "2025-12-24T13:02:21.543Z",
    "dateUpdated": "2025-12-24T13:05:41.858Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50745\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:01.210\",\"lastModified\":\"2025-12-24T13:16:01.210\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nstaging: media: tegra-video: fix device_node use after free\\n\\nAt probe time this code path is followed:\\n\\n * tegra_csi_init\\n   * tegra_csi_channels_alloc\\n     * for_each_child_of_node(node, channel) -- iterates over channels\\n       * automatically gets \u0027channel\u0027\\n         * tegra_csi_channel_alloc()\\n           * saves into chan-\u003eof_node a pointer to the channel OF node\\n       * automatically gets and puts \u0027channel\u0027\\n       * now the node saved in chan-\u003eof_node has refcount 0, can disappear\\n   * tegra_csi_channels_init\\n     * iterates over channels\\n       * tegra_csi_channel_init -- uses chan-\u003eof_node\\n\\nAfter that, chan-\u003eof_node keeps storing the node until the device is\\nremoved.\\n\\nof_node_get() the node and of_node_put() it during teardown to avoid any\\nrisk.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0fd003d3c708c80350a815eaf37b8e1114b976cf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5451efb2ca30f3c42b9efb8327ce35b62870dbd3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6512c9498fcb97e7c760e3ef86b2272f2c0f765f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c4d344163c3a7f90712525f931a6c016bbb35e18\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce50c612458091d926ccb05d7db11d9f93532db2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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