Vulnerability-Lookup

GHSA-HCMX-X6WC-RR97

Vulnerability from github – Published: 2025-12-09 03:31 – Updated: 2025-12-09 03:31

Details

In the Linux kernel, the following vulnerability has been resolved:

platform/chrome: cros_ec_typec: zero out stale pointers

cros_typec_get_switch_handles allocates four pointers when obtaining type-c switch handles. These pointers are all freed if failing to obtain any of them; therefore, pointers in port become stale. The stale pointers eventually cause use-after-free or double free in later code paths. Zeroing out all pointer fields after freeing to eliminate these stale pointers.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50642"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-09T01:16:46Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/chrome: cros_ec_typec: zero out stale pointers\n\n`cros_typec_get_switch_handles` allocates four pointers when obtaining\ntype-c switch handles. These pointers are all freed if failing to obtain\nany of them; therefore, pointers in `port` become stale. The stale\npointers eventually cause use-after-free or double free in later code\npaths. Zeroing out all pointer fields after freeing to eliminate these\nstale pointers.",
  "id": "GHSA-hcmx-x6wc-rr97",
  "modified": "2025-12-09T03:31:09Z",
  "published": "2025-12-09T03:31:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ceadb5a3e45f1b81cf54bd496b40a5e50b6bd40"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6613f36a2fa5c69e528bccba8b3d831f759dad2f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9a8aadcf0b459c1257b9477fd6402e1d5952ae07"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b610758bb3e0674644c1255cdafc2f46b7e05ff9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50642 (GCVE-0-2022-50642)

Vulnerability from cvelistv5 – Published: 2025-12-09 00:00 – Updated: 2025-12-09 00:00

Title

platform/chrome: cros_ec_typec: zero out stale pointers

Summary

In the Linux kernel, the following vulnerability has been resolved: platform/chrome: cros_ec_typec: zero out stale pointers `cros_typec_get_switch_handles` allocates four pointers when obtaining type-c switch handles. These pointers are all freed if failing to obtain any of them; therefore, pointers in `port` become stale. The stale pointers eventually cause use-after-free or double free in later code paths. Zeroing out all pointer fields after freeing to eliminate these stale pointers.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/0ceadb5a3e45f1b81…
	https://git.kernel.org/stable/c/b610758bb3e067464…
	https://git.kernel.org/stable/c/6613f36a2fa5c69e5…
	https://git.kernel.org/stable/c/9a8aadcf0b459c125…

Impacted products

Vendor

Product

Version

Linux

Affected: f28adb41dab4a2795fd959750df57adffd2bb0be , < 0ceadb5a3e45f1b81cf54bd496b40a5e50b6bd40 (git)
Affected: f28adb41dab4a2795fd959750df57adffd2bb0be , < b610758bb3e0674644c1255cdafc2f46b7e05ff9 (git)
Affected: f28adb41dab4a2795fd959750df57adffd2bb0be , < 6613f36a2fa5c69e528bccba8b3d831f759dad2f (git)
Affected: f28adb41dab4a2795fd959750df57adffd2bb0be , < 9a8aadcf0b459c1257b9477fd6402e1d5952ae07 (git)

Linux

Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/chrome/cros_ec_typec.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0ceadb5a3e45f1b81cf54bd496b40a5e50b6bd40",
              "status": "affected",
              "version": "f28adb41dab4a2795fd959750df57adffd2bb0be",
              "versionType": "git"
            },
            {
              "lessThan": "b610758bb3e0674644c1255cdafc2f46b7e05ff9",
              "status": "affected",
              "version": "f28adb41dab4a2795fd959750df57adffd2bb0be",
              "versionType": "git"
            },
            {
              "lessThan": "6613f36a2fa5c69e528bccba8b3d831f759dad2f",
              "status": "affected",
              "version": "f28adb41dab4a2795fd959750df57adffd2bb0be",
              "versionType": "git"
            },
            {
              "lessThan": "9a8aadcf0b459c1257b9477fd6402e1d5952ae07",
              "status": "affected",
              "version": "f28adb41dab4a2795fd959750df57adffd2bb0be",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/platform/chrome/cros_ec_typec.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.86",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "5.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/chrome: cros_ec_typec: zero out stale pointers\n\n`cros_typec_get_switch_handles` allocates four pointers when obtaining\ntype-c switch handles. These pointers are all freed if failing to obtain\nany of them; therefore, pointers in `port` become stale. The stale\npointers eventually cause use-after-free or double free in later code\npaths. Zeroing out all pointer fields after freeing to eliminate these\nstale pointers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-09T00:00:16.490Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/0ceadb5a3e45f1b81cf54bd496b40a5e50b6bd40"
        },
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          "url": "https://git.kernel.org/stable/c/b610758bb3e0674644c1255cdafc2f46b7e05ff9"
        },
        {
          "url": "https://git.kernel.org/stable/c/6613f36a2fa5c69e528bccba8b3d831f759dad2f"
        },
        {
          "url": "https://git.kernel.org/stable/c/9a8aadcf0b459c1257b9477fd6402e1d5952ae07"
        }
      ],
      "title": "platform/chrome: cros_ec_typec: zero out stale pointers",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50642",
    "datePublished": "2025-12-09T00:00:16.490Z",
    "dateReserved": "2025-12-08T23:57:43.370Z",
    "dateUpdated": "2025-12-09T00:00:16.490Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-HCMX-X6WC-RR97

CVE-2022-50642 (GCVE-0-2022-50642)

Tags

Sightings

Nomenclature