UnratedFix available

pnfs/blocklayout: Fix device leaks on parse failure

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: pnfs/blocklayout: Fix device leaks on parse failure bl_parse_concat() and bl_parse_stripe() allocate a child device array and then parse each child in turn. If parsing a child fails, the failed child is not counted in nr_children and the parent may be left with a children array that bl_free_device() will not release when nr_children is zero. Release the failed child and the already parsed children before returning the error. Also make bl_free_device() release the child array whenever the children pointer is set, so that partially initialised concat or stripe devices are cleaned up correctly. bl_parse_scsi() can also fail after assigning d->bdev_file and dropping the file reference. Clear the pointer after fput() so that an outer cleanup path does not put it again.

Products: Kernel
Affected versions: Not specified
Fixed versions: 6.1.191, 6.12.110, 6.18.52, 6.6.160, 7.2.6
CVEs: CVE-2026-90150
Confirmed fixed CVEs: Not specified
Updated in this feed: 3 Nov 2026, 16:19 UTC · Revision 1

Source evidence

pnfs/blocklayout: Fix device leaks on parse failure

core-osv · Original source

Published 17 Sept 2026, 16:06 UTC

osv:CVE-2026-90150

Kernel

Fixed versions: 6.1.191, 6.6.160, 6.12.110, 6.18.52, 7.2.6

Complete source record

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  "url": "https://osv.dev/vulnerability/CVE-2026-90150",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "pnfs/blocklayout: Fix device leaks on parse failure",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: pnfs/blocklayout: Fix device leaks on parse failure bl_parse_concat() and bl_parse_stripe() allocate a child device array and then parse each child in turn. If parsing a child fails, the failed child is not counted in nr_children and the parent may be left with a children array that bl_free_device() will not release when nr_children is zero. Release the failed child and the already parsed children before returning the error. Also make bl_free_device() release the child array whenever the children pointer is set, so that partially initialised concat or stripe devices are cleaned up correctly. bl_parse_scsi() can also fail after assigning d->bdev_file and dropping the file reference. Clear the pointer after fput() so that an outer cleanup path does not put it again.",
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      ],
      "modified": "2026-11-01T02:30:17.599549106Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1e1c36b206c659cf94c6755a1d821ed1babd32bc",
        "https://git.kernel.org/stable/c/23e4162405c456ce12c772d5882d306135e828ae",
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  "source_id": "core-osv",
  "document_id": 497249,
  "published_at": "2026-09-17T16:06:44.32+00:00"
}