mm/slab_common: fix slab_caches list corruption after kmem_cache_destroy()

{
  "id": "14243db3c78acf4af3fcdd31258b0ba4ddab5a8eeb464319a8733b5e9bd37432",
  "url": "https://osv.dev/vulnerability/CVE-2023-52562",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mm/slab_common: fix slab_caches list corruption after kmem_cache_destroy()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: mm/slab_common: fix slab_caches list corruption after kmem_cache_destroy() After the commit in Fixes:, if a module that created a slab cache does not release all of its allocated objects before destroying the cache (at rmmod time), we might end up releasing the kmem_cache object without removing it from the slab_caches list thus corrupting the list as kmem_cache_destroy() ignores the return value from shutdown_cache(), which in turn never removes the kmem_cache object from slabs_list in case __kmem_cache_shutdown() fails to release all of the cache's slabs. This is easily observable on a kernel built with CONFIG_DEBUG_LIST=y as after that ill release the system will immediately trip on list_add, or list_del, assertions similar to the one shown below as soon as another kmem_cache gets created, or destroyed: [ 1041.213632] list_del corruption. next->prev should be ffff89f596fb5768, but was 52f1e5016aeee75d. (next=ffff89f595a1b268) [ 1041.219165] ------------[ cut here ]------------ [ 1041.221517] kernel BUG at lib/list_debug.c:62! [ 1041.223452] invalid opcode: 0000 [#1] PREEMPT SMP PTI [ 1041.225408] CPU: 2 PID: 1852 Comm: rmmod Kdump: loaded Tainted: G B W OE 6.5.0 #15 [ 1041.228244] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20230524-3.fc37 05/24/2023 [ 1041.231212] RIP: 0010:__list_del_entry_valid+0xae/0xb0 Another quick way to trigger this issue, in a kernel with CONFIG_SLUB=y, is to set",
    "evidence": "osv:CVE-2023-52562",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.56",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.5.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-52562",
      "aliases": [
        "CVE-2023-52562"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "0495e337b7039191dfce6e03f5f830454b1fae6b"
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                {
                  "fixed": "a5569bb187521432f509b69dda7d29f78b2d38b0"
                },
                {
                  "fixed": "51988be187b041e5355245957b0b9751fa382e0d"
                },
                {
                  "fixed": "46a9ea6681907a3be6b6b0d43776dccc62cad6cf"
                }
              ]
            },
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "5.19.8"
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                {
                  "fixed": "5.20"
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              "type": "GIT",
              "events": [
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          "versions": [
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            "v5.19.16",
            "v5.19.15",
            "v5.19.14",
            "v5.19.13",
            "v5.19.12",
            "v5.19.11",
            "v5.19.10",
            "v5.19.9",
            "v5.19.8"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52562.json"
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        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.0.0"
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                {
                  "fixed": "6.1.56"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.2.0"
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                {
                  "fixed": "6.5.6"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52562.json"
          }
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      ],
      "modified": "2026-10-28T02:30:38.150157771Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/46a9ea6681907a3be6b6b0d43776dccc62cad6cf",
        "https://git.kernel.org/stable/c/51988be187b041e5355245957b0b9751fa382e0d",
        "https://git.kernel.org/stable/c/a5569bb187521432f509b69dda7d29f78b2d38b0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52562.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-52562",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52562.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-52562",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 505019,
  "published_at": "2024-03-02T21:59:35.568+00:00"
}