cve/published/2025/CVE-2025-21870.json

{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiers\n\nOther, non DAI copier widgets could have the same  stream name (sname) as\nthe ALH copier and in that case the copier->data is NULL, no alh_data is\nattached, which could lead to NULL pointer dereference.\nWe could check for this NULL pointer in sof_ipc4_prepare_copier_module()\nand avoid the crash, but a similar loop in sof_ipc4_widget_setup_comp_dai()\nwill miscalculate the ALH device count, causing broken audio.\n\nThe correct fix is to harden the matching logic by making sure that the\n1. widget is a DAI widget - so dai = w->private is valid\n2. the dai (and thus the copier) is ALH copier"
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "sound/soc/sof/ipc4-topology.c"
               ],
               "versions": [
                  {
                     "version": "a150345aa758492e05d2934f318ce7c2566b1cfe",
                     "lessThan": "87c8768a96092ce75cd47fe076db5080db7ac515",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a150345aa758492e05d2934f318ce7c2566b1cfe",
                     "lessThan": "93c6c2e5801aab09ef1ef99f248f3cd323c3f152",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "a150345aa758492e05d2934f318ce7c2566b1cfe",
                     "lessThan": "6fd60136d256b3b948333ebdb3835f41a95ab7ef",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "sound/soc/sof/ipc4-topology.c"
               ],
               "versions": [
                  {
                     "version": "6.0",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.0",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.12.17",
                     "lessThanOrEqual": "6.12.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.13.5",
                     "lessThanOrEqual": "6.13.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.14",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "cpeApplicability": [
            {
               "nodes": [
                  {
                     "operator": "OR",
                     "negate": false,
                     "cpeMatch": [
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.0",
                           "versionEndExcluding": "6.12.17"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.0",
                           "versionEndExcluding": "6.13.5"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.0",
                           "versionEndExcluding": "6.14"
                        }
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               ]
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         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/87c8768a96092ce75cd47fe076db5080db7ac515"
            },
            {
               "url": "https://git.kernel.org/stable/c/93c6c2e5801aab09ef1ef99f248f3cd323c3f152"
            },
            {
               "url": "https://git.kernel.org/stable/c/6fd60136d256b3b948333ebdb3835f41a95ab7ef"
            }
         ],
         "title": "ASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiers",
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   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2025-21870",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
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