ghsa-52fr-53gv-g23j
Vulnerability from github
Published
2025-05-01 15:31
Modified
2025-05-01 15:31
Details

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

fscrypt: fix keyring memory leak on mount failure

Commit d7e7b9af104c ("fscrypt: stop using keyrings subsystem for fscrypt_master_key") moved the keyring destruction from __put_super() to generic_shutdown_super() so that the filesystem's block device(s) are still available. Unfortunately, this causes a memory leak in the case where a mount is attempted with the test_dummy_encryption mount option, but the mount fails after the option has already been processed.

To fix this, attempt the keyring destruction in both places.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49897"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:14Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfscrypt: fix keyring memory leak on mount failure\n\nCommit d7e7b9af104c (\"fscrypt: stop using keyrings subsystem for\nfscrypt_master_key\") moved the keyring destruction from __put_super() to\ngeneric_shutdown_super() so that the filesystem\u0027s block device(s) are\nstill available.  Unfortunately, this causes a memory leak in the case\nwhere a mount is attempted with the test_dummy_encryption mount option,\nbut the mount fails after the option has already been processed.\n\nTo fix this, attempt the keyring destruction in both places.",
  "id": "GHSA-52fr-53gv-g23j",
  "modified": "2025-05-01T15:31:52Z",
  "published": "2025-05-01T15:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49897"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b1747653b102c555bac745ebe5ca86cdd20e43f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29997a6fa60de1de2fa0de471e7652efa6e95868"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ccd30a476f8e864732de220bd50e6f372f5ebcab"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cff805b1518f38d57866065343db2285f2dcd5ab"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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