media: ivsc: Fix crash at shutdown due to missing mei_cldev_disable() calls

{
  "id": "4baa1d206123045f582121becd379c0757f483e35f77ed06cae29d7e78505d8a",
  "url": "https://osv.dev/vulnerability/CVE-2025-39711",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "media: ivsc: Fix crash at shutdown due to missing mei_cldev_disable() calls",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: media: ivsc: Fix crash at shutdown due to missing mei_cldev_disable() calls Both the ACE and CSI driver are missing a mei_cldev_disable() call in their remove() function. This causes the mei_cl client to stay part of the mei_device->file_list list even though its memory is freed by mei_cl_bus_dev_release() calling kfree(cldev->cl). This leads to a use-after-free when mei_vsc_remove() runs mei_stop() which first removes all mei bus devices calling mei_ace_remove() and mei_csi_remove() followed by mei_cl_bus_dev_release() and then calls mei_cl_all_disconnect() which walks over mei_device->file_list dereferecing the just freed cldev->cl. And mei_vsc_remove() it self is run at shutdown because of the platform_device_unregister(tp->pdev) in vsc_tp_shutdown() When building a kernel with KASAN this leads to the following KASAN report: [ 106.634504] ================================================================== [ 106.634623] BUG: KASAN: slab-use-after-free in mei_cl_set_disconnected (drivers/misc/mei/client.c:783) mei [ 106.634683] Read of size 4 at addr ffff88819cb62018 by task systemd-shutdow/1 [ 106.634729] [ 106.634767] Tainted: [E]=UNSIGNED_MODULE [ 106.634770] Hardware name: Dell Inc. XPS 16 9640/09CK4V, BIOS 1.12.0 02/10/2025 [ 106.634773] Call Trace: [ 106.634777] ... [ 106.634871] kasan_report (mm/kasan/report.c:221 mm/kasan/report.c:636) [ 106.634901] mei_cl_set_disconnected (drivers/misc/mei/client.c:7",
    "evidence": "osv:CVE-2025-39711",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.6.103",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.44",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.16.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-39711",
      "aliases": [
        "CVE-2025-39711"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "29006e196a5661d9afc8152fa2bf8a5347ac17b4"
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                {
                  "fixed": "3c0e4cc4f55f9a1db2a761e4ffb27c9594245888"
                },
                {
                  "fixed": "639f5b33fcd7c59157f29b09f6f2866eacf9279c"
                },
                {
                  "fixed": "1dfe73394dcfc9b049c8da0dc181c45f156a5f49"
                },
                {
                  "fixed": "0c92c49fc688cfadacc47ae99b06a31237702e9e"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39711.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.6.0"
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                {
                  "fixed": "6.6.103"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.44"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.16.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39711.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.049173312Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0c92c49fc688cfadacc47ae99b06a31237702e9e",
        "https://git.kernel.org/stable/c/1dfe73394dcfc9b049c8da0dc181c45f156a5f49",
        "https://git.kernel.org/stable/c/3c0e4cc4f55f9a1db2a761e4ffb27c9594245888",
        "https://git.kernel.org/stable/c/639f5b33fcd7c59157f29b09f6f2866eacf9279c",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39711.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-39711",
        "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/2025/39xxx/CVE-2025-39711.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-39711",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517564,
  "published_at": "2025-09-05T17:21:18.348+00:00"
}