FKIE_CVE-2026-46129

Vulnerability from fkie_nvd - Published: 2026-05-28 10:16 - Updated: 2026-05-28 13:44
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix double free in create_space_info() error path When kobject_init_and_add() fails, the call chain is: create_space_info() -> btrfs_sysfs_add_space_info_type() -> kobject_init_and_add() -> failure -> kobject_put(&space_info->kobj) -> space_info_release() -> kfree(space_info) Then control returns to create_space_info(): btrfs_sysfs_add_space_info_type() returns error -> goto out_free -> kfree(space_info) This causes a double free. Keep the direct kfree(space_info) for the earlier failure path, but after btrfs_sysfs_add_space_info_type() has called kobject_put(), let the kobject release callback handle the cleanup.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f487be81292702a59ea9dbc4088b3360a50e837
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9a060970fd7b5e1c561e4ce73cb9949e4269a738
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2670ec4aa49ca226bce9776601e0da37502be07
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd6ade0fdd59218d71a981ae7c937a304e49209c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f414b3abbba59ef379a2b3c31f2bdd9358ed5e53
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix double free in create_space_info() error path\n\nWhen kobject_init_and_add() fails, the call chain is:\n\ncreate_space_info()\n-\u003e btrfs_sysfs_add_space_info_type()\n-\u003e kobject_init_and_add()\n-\u003e failure\n-\u003e kobject_put(\u0026space_info-\u003ekobj)\n-\u003e space_info_release()\n-\u003e kfree(space_info)\n\nThen control returns to create_space_info():\n\nbtrfs_sysfs_add_space_info_type() returns error\n-\u003e goto out_free\n-\u003e kfree(space_info)\n\nThis causes a double free.\n\nKeep the direct kfree(space_info) for the earlier failure path, but\nafter btrfs_sysfs_add_space_info_type() has called kobject_put(), let\nthe kobject release callback handle the cleanup."
    }
  ],
  "id": "CVE-2026-46129",
  "lastModified": "2026-05-28T13:44:01.663",
  "metrics": {},
  "published": "2026-05-28T10:16:28.473",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3f487be81292702a59ea9dbc4088b3360a50e837"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9a060970fd7b5e1c561e4ce73cb9949e4269a738"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c2670ec4aa49ca226bce9776601e0da37502be07"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dd6ade0fdd59218d71a981ae7c937a304e49209c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f414b3abbba59ef379a2b3c31f2bdd9358ed5e53"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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