CVE-2022-50300 (GCVE-0-2022-50300)
Vulnerability from cvelistv5
Published
2025-09-15 14:45
Modified
2025-09-15 14:45
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map use-after-free when handling missing device in read_one_chunk Store the error code before freeing the extent_map. Though it's reference counted structure, in that function it's the first and last allocation so this would lead to a potential use-after-free. The error can happen eg. when chunk is stored on a missing device and the degraded mount option is missing. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216721
References
Impacted products
Vendor Product Version
Linux Linux Version: adfb69af7d8cb6a3958f75aad1ef4bc96891d116
Version: adfb69af7d8cb6a3958f75aad1ef4bc96891d116
Version: adfb69af7d8cb6a3958f75aad1ef4bc96891d116
Version: adfb69af7d8cb6a3958f75aad1ef4bc96891d116
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{
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          "programFiles": [
            "fs/btrfs/volumes.c"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix extent map use-after-free when handling missing device in read_one_chunk\n\nStore the error code before freeing the extent_map. Though it\u0027s\nreference counted structure, in that function it\u0027s the first and last\nallocation so this would lead to a potential use-after-free.\n\nThe error can happen eg. when chunk is stored on a missing device and\nthe degraded mount option is missing.\n\nBugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216721"
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      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:45:55.896Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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    "datePublished": "2025-09-15T14:45:55.896Z",
    "dateReserved": "2025-09-15T14:18:36.812Z",
    "dateUpdated": "2025-09-15T14:45:55.896Z",
    "state": "PUBLISHED"
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}


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