ghsa-q55g-j56q-r6fq
Vulnerability from github
Published
2025-05-20 18:30
Modified
2025-05-20 18:30
Details

In the Linux kernel, the following vulnerability has been resolved:

mm, slab: clean up slab->obj_exts always

When memory allocation profiling is disabled at runtime or due to an error, shutdown_mem_profiling() is called: slab->obj_exts which previously allocated remains. It won't be cleared by unaccount_slab() because of mem_alloc_profiling_enabled() not true. It's incorrect, slab->obj_exts should always be cleaned up in unaccount_slab() to avoid following error:

[...]BUG: Bad page state in process... .. [...]page dumped because: page still charged to cgroup

[andriy.shevchenko@linux.intel.com: fold need_slab_obj_ext() into its only user]

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37908"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-20T16:15:27Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm, slab: clean up slab-\u003eobj_exts always\n\nWhen memory allocation profiling is disabled at runtime or due to an\nerror, shutdown_mem_profiling() is called: slab-\u003eobj_exts which\npreviously allocated remains.\nIt won\u0027t be cleared by unaccount_slab() because of\nmem_alloc_profiling_enabled() not true. It\u0027s incorrect, slab-\u003eobj_exts\nshould always be cleaned up in unaccount_slab() to avoid following error:\n\n[...]BUG: Bad page state in process...\n..\n[...]page dumped because: page still charged to cgroup\n\n[andriy.shevchenko@linux.intel.com: fold need_slab_obj_ext() into its only user]",
  "id": "GHSA-q55g-j56q-r6fq",
  "modified": "2025-05-20T18:30:54Z",
  "published": "2025-05-20T18:30:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37908"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/01db0e1a48345aa1937f3bdfc7c7108d03ebcf7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be8250786ca94952a19ce87f98ad9906448bc9ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dab2a13059a475b6392550f882276e170fe2fcff"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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