{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-53275",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53275",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-16T08:11:10.475Z",
    "updatedAt": "2026-05-23T15:28:25.281Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "ALSA: hda: fix a possible null-pointer dereference due to data race in snd_hdac_regmap_sync()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: hda: fix a possible null-pointer dereference due to data race in snd_hdac_regmap_sync()\n\nThe variable codec->regmap is often protected by the lock\ncodec->regmap_lock when is accessed. However, it is accessed without\nholding the lock when is accessed in snd_hdac_regmap_sync():\n\n  if (codec->regmap)\n\nIn my opinion, this may be a harmful race, because if codec->regmap is\nset to NULL right after the condition is checked, a null-pointer\ndereference can occur in the called function regcache_sync():\n\n  map->lock(map->lock_arg); --> Line 360 in drivers/base/regmap/regcache.c\n\nTo fix this possible null-pointer dereference caused by data race, the\nmutex_lock coverage is extended to protect the if statement as well as the\nfunction call to regcache_sync().\n\n[ Note: the lack of the regmap_lock itself is harmless for the current\n  codec driver implementations, as snd_hdac_regmap_sync() is only for\n  PM runtime resume that is prohibited during the codec probe.\n  But the change makes the whole code more consistent, so it's merged\n  as is -- tiwai ]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "69d5dc286d05441ca2f854ae8df11201f6f9b706",
              "status": "affected",
              "versionType": "git",
              "lessThan": "109f0aaa0b8838a88af9125b79579023539300a7"
            },
            {
              "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9f9eed451176ffcac6b5ba0f6dae1a6b4a1cb0eb"
            },
            {
              "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8703b26387e1fa4f8749db98d24c67617b873acb"
            },
            {
              "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cdd412b528dee6e0851c4735d6676ec138da13a4"
            },
            {
              "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b32e40379e5b2814de0c4bc199edc2d82317dc07"
            },
            {
              "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1f4a08fed450db87fbb5ff5105354158bdbe1a22"
            },
            {
              "version": "5.4.43",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.4.255"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.6"
            },
            {
              "version": "5.4.255",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.192",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.128",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.47",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.4.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "version": "6.5",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}