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CVE-2026-53294

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs.

Severity
HIGH
CVSS score
7.8 (v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-06-26 20:17:22.310000
Last modified
2026-11-06 17:18:21.513000
View original CVE JSON
{
  "id": "CVE-2026-53294",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-06-26T20:17:22.310",
  "lastModified": "2026-11-06T17:18:21.513",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mailbox-test: don't free the reused channel\n\nThe RX channel can be aliased to the TX channel if it has a different\nMMIO. This special case needs to be handled when freeing the channels\notherwise a double-free occurs."
    }
  ],
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      "affectedData": [
        {
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          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/mailbox/mailbox-test.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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            },
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "version": "6.12.91",
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              "version": "6.18.33",
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              "versionType": "original_commit_for_fix",
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      ]
    }
  ],
  "metrics": {
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          "baseScore": 7.8,
          "baseSeverity": "HIGH",
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          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
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        "ssvcData": {
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          "options": [
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          "role": "CISA Coordinator",
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  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
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          "value": "CWE-415"
        }
      ]
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  ],
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}