CVE-2025-38549 (GCVE-0-2025-38549)
Vulnerability from cvelistv5
Published
2025-08-16 11:34
Modified
2025-08-16 11:34
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: efivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths When processing mount options, efivarfs allocates efivarfs_fs_info (sfi) early in fs_context initialization. However, sfi is associated with the superblock and typically freed when the superblock is destroyed. If the fs_context is released (final put) before fill_super is called—such as on error paths or during reconfiguration—the sfi structure would leak, as ownership never transfers to the superblock. Implement the .free callback in efivarfs_context_ops to ensure any allocated sfi is properly freed if the fs_context is torn down before fill_super, preventing this memory leak.
References
Impacted products
Vendor Product Version
Linux Linux Version: 5329aa5101f73c451bcd48deaf3f296685849d9c
Version: 5329aa5101f73c451bcd48deaf3f296685849d9c
Version: 5329aa5101f73c451bcd48deaf3f296685849d9c
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          "programFiles": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nefivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths\n\nWhen processing mount options, efivarfs allocates efivarfs_fs_info (sfi)\nearly in fs_context initialization. However, sfi is associated with the\nsuperblock and typically freed when the superblock is destroyed. If the\nfs_context is released (final put) before fill_super is called\u2014such as\non error paths or during reconfiguration\u2014the sfi structure would leak,\nas ownership never transfers to the superblock.\n\nImplement the .free callback in efivarfs_context_ops to ensure any\nallocated sfi is properly freed if the fs_context is torn down before\nfill_super, preventing this memory leak."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-08-16T11:34:17.699Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/64e135f1eaba0bbb0cdee859af3328c68d5b9789"
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    "cveId": "CVE-2025-38549",
    "datePublished": "2025-08-16T11:34:17.699Z",
    "dateReserved": "2025-04-16T04:51:24.024Z",
    "dateUpdated": "2025-08-16T11:34:17.699Z",
    "state": "PUBLISHED"
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}


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