CVE-2023-53275

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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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["sound/hda/hdac_regmap.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "109f0aaa0b8838a88af9125b79579023539300a7", "status": "affected", "version": "69d5dc286d05441ca2f854ae8df11201f6f9b706", "versionType": "git"}, {"lessThan": "9f9eed451176ffcac6b5ba0f6dae1a6b4a1cb0eb", "status": "affected", "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d", "versionType": "git"}, {"lessThan": "8703b26387e1fa4f8749db98d24c67617b873acb", "status": "affected", "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d", "versionType": "git"}, {"lessThan": "cdd412b528dee6e0851c4735d6676ec138da13a4", "status": "affected", "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d", "versionType": "git"}, {"lessThan": "b32e40379e5b2814de0c4bc199edc2d82317dc07", "status": "affected", "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d", "versionType": "git"}, {"lessThan": "1f4a08fed450db87fbb5ff5105354158bdbe1a22", "status": "affected", "version": "1a462be52f4505a2719631fb5aa7bfdbd37bfd8d", "versionType": "git"}, {"lessThan": "5.4.255", "status": "affected", "version": "5.4.43", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["sound/hda/hdac_regmap.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.6"}, {"lessThan": "5.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.255", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.192", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.128", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.47", "versionType": "semver"}, {"lessThanOrEqual": "6.4.*", "status": "unaffected", "version": "6.4.12", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.5", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FE1B7424-67B7-4998-AF55-011A43DB1DAE", "versionEndExcluding": "5.4.255", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9396FFDC-6A0D-44B7-9368-21B456F6D4AE", "versionEndExcluding": "5.10.192", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "1415629F-F97B-4880-BA1E-AF3DBB8EF305", "versionEndExcluding": "5.15.128", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2EEA01B0-0151-4E0F-B140-1A441EEDD717", "versionEndExcluding": "6.1.47", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CF8ECF64-40AE-49AB-8315-4D83F9F56ECF", "versionEndExcluding": "6.4.12", "versionStartIncluding": "6.2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 ]"}], "id": "CVE-2023-53275", "lastModified": "2026-06-17T06:44:42.780", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-53275", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-14T18:06:44.564757Z", "version": "2.0.3"}}]}, "published": "2025-09-16T08:15:36.360", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/109f0aaa0b8838a88af9125b79579023539300a7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1f4a08fed450db87fbb5ff5105354158bdbe1a22"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8703b26387e1fa4f8749db98d24c67617b873acb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9f9eed451176ffcac6b5ba0f6dae1a6b4a1cb0eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b32e40379e5b2814de0c4bc199edc2d82317dc07"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cdd412b528dee6e0851c4735d6676ec138da13a4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: ALSA: hda: fix a possible null-pointer dereference due to data race in snd_hdac_regmap_sync()", "id": "2395693", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395693"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-53275", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53275\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53275\nhttps://lore.kernel.org/linux-cve-announce/2025091623-CVE-2023-53275-3ac4@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-09-17T10:04:58.812101+00:00", "updated": "2025-09-17T10:04:58.812156+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}