CVE-2025-38659 (GCVE-0-2025-38659)
Vulnerability from cvelistv5
Published
2025-08-22 16:01
Modified
2025-08-22 16:01
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: gfs2: No more self recovery When a node withdraws and it turns out that it is the only node that has the filesystem mounted, gfs2 currently tries to replay the local journal to bring the filesystem back into a consistent state. Not only is that a very bad idea, it has also never worked because gfs2_recover_func() will refuse to do anything during a withdraw. However, before even getting to this point, gfs2_recover_func() dereferences sdp->sd_jdesc->jd_inode. This was a use-after-free before commit 04133b607a78 ("gfs2: Prevent double iput for journal on error") and is a NULL pointer dereference since then. Simply get rid of self recovery to fix that.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1a91ba12abef628b43cada87478328274d988e88
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6784367b2f3cd7b89103de35764f37f152590dbd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/97c94c7dbddc34d353c83b541b3decabf98d04af
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/deb016c1669002e48c431d6fd32ea1c20ef41756
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f5426ffbec971a8f7346a57392d3a901bdee5a9b
Impacted products
Vendor Product Version
Linux Linux Version: 601ef0d52e9617588fcff3df26953592f2eb44ac
Version: 601ef0d52e9617588fcff3df26953592f2eb44ac
Version: 601ef0d52e9617588fcff3df26953592f2eb44ac
Version: 601ef0d52e9617588fcff3df26953592f2eb44ac
Version: 601ef0d52e9617588fcff3df26953592f2eb44ac
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   Linux Linux Version: 5.7
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/gfs2/util.c"
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          "versions": [
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: No more self recovery\n\nWhen a node withdraws and it turns out that it is the only node that has\nthe filesystem mounted, gfs2 currently tries to replay the local journal\nto bring the filesystem back into a consistent state.  Not only is that\na very bad idea, it has also never worked because gfs2_recover_func()\nwill refuse to do anything during a withdraw.\n\nHowever, before even getting to this point, gfs2_recover_func()\ndereferences sdp-\u003esd_jdesc-\u003ejd_inode.  This was a use-after-free before\ncommit 04133b607a78 (\"gfs2: Prevent double iput for journal on error\")\nand is a NULL pointer dereference since then.\n\nSimply get rid of self recovery to fix that."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-22T16:01:02.448Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
        {
          "url": "https://git.kernel.org/stable/c/deb016c1669002e48c431d6fd32ea1c20ef41756"
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      ],
      "title": "gfs2: No more self recovery",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38659",
    "datePublished": "2025-08-22T16:01:02.448Z",
    "dateReserved": "2025-04-16T04:51:24.031Z",
    "dateUpdated": "2025-08-22T16:01:02.448Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
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  }
}


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