cve/published/2025/CVE-2025-23134.json

{
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         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: timer: Don't take register_mutex with copy_from/to_user()\n\nThe infamous mmap_lock taken in copy_from/to_user() can be often\nproblematic when it's called inside another mutex, as they might lead\nto deadlocks.\n\nIn the case of ALSA timer code, the bad pattern is with\nguard(mutex)(&register_mutex) that covers copy_from/to_user() -- which\nwas mistakenly introduced at converting to guard(), and it had been\ncarefully worked around in the past.\n\nThis patch fixes those pieces simply by moving copy_from/to_user() out\nof the register mutex lock again."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "sound/core/timer.c"
               ],
               "versions": [
                  {
                     "version": "3923de04c81733b30b8ed667569632272fdfed9a",
                     "lessThan": "15291b561d8cc835a2eea76b394070cf8e072771",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "3923de04c81733b30b8ed667569632272fdfed9a",
                     "lessThan": "296f7a9e15aab276db11206cbc1e2ae1215d7862",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "3923de04c81733b30b8ed667569632272fdfed9a",
                     "lessThan": "b074f47e55df93832bbbca1b524c501e6fea1c0d",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "3923de04c81733b30b8ed667569632272fdfed9a",
                     "lessThan": "3424c8f53bc63c87712a7fc22dc13d0cc85fb0d6",
                     "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/core/timer.c"
               ],
               "versions": [
                  {
                     "version": "6.9",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.9",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.12.23",
                     "lessThanOrEqual": "6.12.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.13.11",
                     "lessThanOrEqual": "6.13.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.14.2",
                     "lessThanOrEqual": "6.14.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.15",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
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            {
               "nodes": [
                  {
                     "operator": "OR",
                     "negate": false,
                     "cpeMatch": [
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.9",
                           "versionEndExcluding": "6.12.23"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.9",
                           "versionEndExcluding": "6.13.11"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.9",
                           "versionEndExcluding": "6.14.2"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.9",
                           "versionEndExcluding": "6.15"
                        }
                     ]
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            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/15291b561d8cc835a2eea76b394070cf8e072771"
            },
            {
               "url": "https://git.kernel.org/stable/c/296f7a9e15aab276db11206cbc1e2ae1215d7862"
            },
            {
               "url": "https://git.kernel.org/stable/c/b074f47e55df93832bbbca1b524c501e6fea1c0d"
            },
            {
               "url": "https://git.kernel.org/stable/c/3424c8f53bc63c87712a7fc22dc13d0cc85fb0d6"
            }
         ],
         "title": "ALSA: timer: Don't take register_mutex with copy_from/to_user()",
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   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2025-23134",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}