Vulnerability-Lookup

GHSA-FCG8-CXRP-MRX7

Vulnerability from github – Published: 2025-12-24 15:30 – Updated: 2026-08-04 12:34

Details

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.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50745"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T13:16:01Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-fcg8-cxrp-mrx7",
  "modified": "2026-08-04T12:34:43Z",
  "published": "2025-12-24T15:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50745"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0fd003d3c708c80350a815eaf37b8e1114b976cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5451efb2ca30f3c42b9efb8327ce35b62870dbd3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6512c9498fcb97e7c760e3ef86b2272f2c0f765f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4d344163c3a7f90712525f931a6c016bbb35e18"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce50c612458091d926ccb05d7db11d9f93532db2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-50745 (GCVE-0-2022-50745)

Vulnerability from cvelistv5 – Published: 2025-12-24 13:05 – Updated: 2026-08-05 08:59

Title

staging: media: tegra-video: fix device_node use after free

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.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/5451efb2ca30f3c42…
https://git.kernel.org/stable/c/ce50c612458091d92…
https://git.kernel.org/stable/c/6512c9498fcb97e7c…
https://git.kernel.org/stable/c/0fd003d3c708c8035…
https://git.kernel.org/stable/c/c4d344163c3a7f907…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1ebaeb09830f36c1111b72a95420814225bd761c , < 5451efb2ca30f3c42b9efb8327ce35b62870dbd3 (git) Affected: 1ebaeb09830f36c1111b72a95420814225bd761c , < ce50c612458091d926ccb05d7db11d9f93532db2 (git) Affected: 1ebaeb09830f36c1111b72a95420814225bd761c , < 6512c9498fcb97e7c760e3ef86b2272f2c0f765f (git) Affected: 1ebaeb09830f36c1111b72a95420814225bd761c , < 0fd003d3c708c80350a815eaf37b8e1114b976cf (git) Affected: 1ebaeb09830f36c1111b72a95420814225bd761c , < c4d344163c3a7f90712525f931a6c016bbb35e18 (git)
Linux	Linux	Affected: 5.10 Unaffected: 0 , < 5.10 (semver) Unaffected: 5.10.163 , ≤ 5.10.* (semver) Unaffected: 5.15.87 , ≤ 5.15.* (semver) Unaffected: 6.0.18 , ≤ 6.0.* (semver) Unaffected: 6.1.4 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/staging/media/tegra-video/csi.c"
          ],
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          "vendor": "Linux",
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "ce50c612458091d926ccb05d7db11d9f93532db2",
              "status": "affected",
              "version": "1ebaeb09830f36c1111b72a95420814225bd761c",
              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
              "lessThan": "0fd003d3c708c80350a815eaf37b8e1114b976cf",
              "status": "affected",
              "version": "1ebaeb09830f36c1111b72a95420814225bd761c",
              "versionType": "git"
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            {
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              "versionType": "git"
            }
          ]
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        {
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.15.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.163",
                  "versionStartIncluding": "5.10",
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                },
                {
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                },
                {
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        {
          "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": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The defect is reached only on the local Tegra CSI platform probe path (tegra_csi_probe \u2192 host1x_client_register \u2192 tegra_csi_init \u2192 tegra_csi_channels_alloc/init) when parsing DT channel children; it is not reachable via network or adjacent-link packet processing.\nAC:L - for_each_child_of_node drops its temporary reference after each channel allocation, and the missing of_node_get leaves a long-lived dangling pointer deterministically on every non-TPG probe with channel nodes; on OF_DYNAMIC/overlay Tegra camera setups the node can be freed while still referenced with no attacker-uncontrollable race.\nPR:L - The buggy path runs automatically during ordinary boot-time/driver probe on affected Tegra210 VIDEO_TEGRA DT configurations with no capability gate, and per the higher-severity reading used for similar probe-time of_node UAF bugs a basic local user is scored rather than requiring init-namespace root.\nUI:N - Channel allocation and tegra_csi_channel_init run as part of normal host1x/video device initialization; no separate victim action such as mounting a filesystem or opening a device is required.\nS:U - The corrupted object is a kernel device_node used by the tegra-video CSI subdev within the host kernel\u2019s security authority; this is ordinary kernel memory-safety impact, not a VM escape or IOMMU/sandbox boundary cross.\nC:H - Holding chan-\u003eof_node (and subdev-\u003efwnode derived from it) after the iterator\u2019s of_node_put without of_node_get is a use-after-free on the device_node; per UAF guidance that enables heap reuse and arbitrary kernel disclosure.\nI:H - The same device_node UAF is a heap-spray target whose freed object fields can be overwritten, converting the dangling OF/fwnode reference into an arbitrary-write and control-flow hijack primitive.\nA:H - Use of the dangling of_node (e.g. full_name / fwnode after free, or later teardown) causes kernel oops/panic, and UAFs are scored Availability High even when not fully exploited."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:59:34.782Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/5451efb2ca30f3c42b9efb8327ce35b62870dbd3"
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        },
        {
          "url": "https://git.kernel.org/stable/c/0fd003d3c708c80350a815eaf37b8e1114b976cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/c4d344163c3a7f90712525f931a6c016bbb35e18"
        }
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      "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": "2026-08-05T08:59:34.782Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.