CVE-2025-39711 (GCVE-0-2025-39711)
Vulnerability from cvelistv5
Published
2025-09-05 17:21
Modified
2025-09-29 05:57
Severity ?
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] <TASK> ... [ 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:783) mei [ 106.634921] mei_cl_all_disconnect (drivers/misc/mei/client.c:2165 (discriminator 4)) mei [ 106.634941] mei_reset (drivers/misc/mei/init.c:163) mei ... [ 106.635042] mei_stop (drivers/misc/mei/init.c:348) mei [ 106.635062] mei_vsc_remove (drivers/misc/mei/mei_dev.h:784 drivers/misc/mei/platform-vsc.c:393) mei_vsc [ 106.635066] platform_remove (drivers/base/platform.c:1424) Add the missing mei_cldev_disable() calls so that the mei_cl gets removed from mei_device->file_list before it is freed to fix this.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c92c49fc688cfadacc47ae99b06a31237702e9e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1dfe73394dcfc9b049c8da0dc181c45f156a5f49
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c0e4cc4f55f9a1db2a761e4ffb27c9594245888
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/639f5b33fcd7c59157f29b09f6f2866eacf9279c
Impacted products
Vendor Product Version
Linux Linux Version: 29006e196a5661d9afc8152fa2bf8a5347ac17b4
Version: 29006e196a5661d9afc8152fa2bf8a5347ac17b4
Version: 29006e196a5661d9afc8152fa2bf8a5347ac17b4
Version: 29006e196a5661d9afc8152fa2bf8a5347ac17b4
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   Linux Linux Version: 6.6
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/intel/ivsc/mei_ace.c",
            "drivers/media/pci/intel/ivsc/mei_csi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3c0e4cc4f55f9a1db2a761e4ffb27c9594245888",
              "status": "affected",
              "version": "29006e196a5661d9afc8152fa2bf8a5347ac17b4",
              "versionType": "git"
            },
            {
              "lessThan": "639f5b33fcd7c59157f29b09f6f2866eacf9279c",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "1dfe73394dcfc9b049c8da0dc181c45f156a5f49",
              "status": "affected",
              "version": "29006e196a5661d9afc8152fa2bf8a5347ac17b4",
              "versionType": "git"
            },
            {
              "lessThan": "0c92c49fc688cfadacc47ae99b06a31237702e9e",
              "status": "affected",
              "version": "29006e196a5661d9afc8152fa2bf8a5347ac17b4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/pci/intel/ivsc/mei_ace.c",
            "drivers/media/pci/intel/ivsc/mei_csi.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.103",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.44",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.4",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17",
                  "versionStartIncluding": "6.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: ivsc: Fix crash at shutdown due to missing mei_cldev_disable() calls\n\nBoth the ACE and CSI driver are missing a mei_cldev_disable() call in\ntheir remove() function.\n\nThis causes the mei_cl client to stay part of the mei_device-\u003efile_list\nlist even though its memory is freed by mei_cl_bus_dev_release() calling\nkfree(cldev-\u003ecl).\n\nThis leads to a use-after-free when mei_vsc_remove() runs mei_stop()\nwhich first removes all mei bus devices calling mei_ace_remove() and\nmei_csi_remove() followed by mei_cl_bus_dev_release() and then calls\nmei_cl_all_disconnect() which walks over mei_device-\u003efile_list dereferecing\nthe just freed cldev-\u003ecl.\n\nAnd mei_vsc_remove() it self is run at shutdown because of the\nplatform_device_unregister(tp-\u003epdev) in vsc_tp_shutdown()\n\nWhen building a kernel with KASAN this leads to the following KASAN report:\n\n[ 106.634504] ==================================================================\n[ 106.634623] BUG: KASAN: slab-use-after-free in mei_cl_set_disconnected (drivers/misc/mei/client.c:783) mei\n[ 106.634683] Read of size 4 at addr ffff88819cb62018 by task systemd-shutdow/1\n[ 106.634729]\n[ 106.634767] Tainted: [E]=UNSIGNED_MODULE\n[ 106.634770] Hardware name: Dell Inc. XPS 16 9640/09CK4V, BIOS 1.12.0 02/10/2025\n[ 106.634773] Call Trace:\n[ 106.634777]  \u003cTASK\u003e\n...\n[ 106.634871] kasan_report (mm/kasan/report.c:221 mm/kasan/report.c:636)\n[ 106.634901] mei_cl_set_disconnected (drivers/misc/mei/client.c:783) mei\n[ 106.634921] mei_cl_all_disconnect (drivers/misc/mei/client.c:2165 (discriminator 4)) mei\n[ 106.634941] mei_reset (drivers/misc/mei/init.c:163) mei\n...\n[ 106.635042] mei_stop (drivers/misc/mei/init.c:348) mei\n[ 106.635062] mei_vsc_remove (drivers/misc/mei/mei_dev.h:784 drivers/misc/mei/platform-vsc.c:393) mei_vsc\n[ 106.635066] platform_remove (drivers/base/platform.c:1424)\n\nAdd the missing mei_cldev_disable() calls so that the mei_cl gets removed\nfrom mei_device-\u003efile_list before it is freed to fix this."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-29T05:57:55.383Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3c0e4cc4f55f9a1db2a761e4ffb27c9594245888"
        },
        {
          "url": "https://git.kernel.org/stable/c/639f5b33fcd7c59157f29b09f6f2866eacf9279c"
        },
        {
          "url": "https://git.kernel.org/stable/c/1dfe73394dcfc9b049c8da0dc181c45f156a5f49"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c92c49fc688cfadacc47ae99b06a31237702e9e"
        }
      ],
      "title": "media: ivsc: Fix crash at shutdown due to missing mei_cldev_disable() calls",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39711",
    "datePublished": "2025-09-05T17:21:18.348Z",
    "dateReserved": "2025-04-16T07:20:57.116Z",
    "dateUpdated": "2025-09-29T05:57:55.383Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-39711\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-05T18:15:48.470\",\"lastModified\":\"2025-09-08T16:25:38.810\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmedia: ivsc: Fix crash at shutdown due to missing mei_cldev_disable() calls\\n\\nBoth the ACE and CSI driver are missing a mei_cldev_disable() call in\\ntheir remove() function.\\n\\nThis causes the mei_cl client to stay part of the mei_device-\u003efile_list\\nlist even though its memory is freed by mei_cl_bus_dev_release() calling\\nkfree(cldev-\u003ecl).\\n\\nThis leads to a use-after-free when mei_vsc_remove() runs mei_stop()\\nwhich first removes all mei bus devices calling mei_ace_remove() and\\nmei_csi_remove() followed by mei_cl_bus_dev_release() and then calls\\nmei_cl_all_disconnect() which walks over mei_device-\u003efile_list dereferecing\\nthe just freed cldev-\u003ecl.\\n\\nAnd mei_vsc_remove() it self is run at shutdown because of the\\nplatform_device_unregister(tp-\u003epdev) in vsc_tp_shutdown()\\n\\nWhen building a kernel with KASAN this leads to the following KASAN report:\\n\\n[ 106.634504] ==================================================================\\n[ 106.634623] BUG: KASAN: slab-use-after-free in mei_cl_set_disconnected (drivers/misc/mei/client.c:783) mei\\n[ 106.634683] Read of size 4 at addr ffff88819cb62018 by task systemd-shutdow/1\\n[ 106.634729]\\n[ 106.634767] Tainted: [E]=UNSIGNED_MODULE\\n[ 106.634770] Hardware name: Dell Inc. XPS 16 9640/09CK4V, BIOS 1.12.0 02/10/2025\\n[ 106.634773] Call Trace:\\n[ 106.634777]  \u003cTASK\u003e\\n...\\n[ 106.634871] kasan_report (mm/kasan/report.c:221 mm/kasan/report.c:636)\\n[ 106.634901] mei_cl_set_disconnected (drivers/misc/mei/client.c:783) mei\\n[ 106.634921] mei_cl_all_disconnect (drivers/misc/mei/client.c:2165 (discriminator 4)) mei\\n[ 106.634941] mei_reset (drivers/misc/mei/init.c:163) mei\\n...\\n[ 106.635042] mei_stop (drivers/misc/mei/init.c:348) mei\\n[ 106.635062] mei_vsc_remove (drivers/misc/mei/mei_dev.h:784 drivers/misc/mei/platform-vsc.c:393) mei_vsc\\n[ 106.635066] platform_remove (drivers/base/platform.c:1424)\\n\\nAdd the missing mei_cldev_disable() calls so that the mei_cl gets removed\\nfrom mei_device-\u003efile_list before it is freed to fix this.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0c92c49fc688cfadacc47ae99b06a31237702e9e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1dfe73394dcfc9b049c8da0dc181c45f156a5f49\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3c0e4cc4f55f9a1db2a761e4ffb27c9594245888\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/639f5b33fcd7c59157f29b09f6f2866eacf9279c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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