CVE-2023-53662

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-53662", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-10-07T15:16:59.662Z", "datePublished": "2025-10-07T15:21:21.703Z", "dateUpdated": "2026-05-11T19:49:29.602Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:49:29.602Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}\n\nIf the filename casefolding fails, we'll be leaking memory from the\nfscrypt_name struct, namely from the 'crypto_buf.name' member.\n\nMake sure we free it in the error path on both ext4_fname_setup_filename()\nand ext4_fname_prepare_lookup() functions."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/crypto.c"], "versions": [{"version": "1ae98e295fa2577fb5e492200c58d10230e00e99", "lessThan": "98fc9c2cc45cfcb56961a73de3ec69b474063fc0", "status": "affected", "versionType": "git"}, {"version": "1ae98e295fa2577fb5e492200c58d10230e00e99", "lessThan": "1fb3f1bbfdb511034b0360dbeb0f6a8424ed2a5c", "status": "affected", "versionType": "git"}, {"version": "1ae98e295fa2577fb5e492200c58d10230e00e99", "lessThan": "36daf050be3f6f067631dc52054de2d3b7cc849f", "status": "affected", "versionType": "git"}, {"version": "1ae98e295fa2577fb5e492200c58d10230e00e99", "lessThan": "7ca4b085f430f3774c3838b3da569ceccd6a0177", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/crypto.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.199", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.54", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.5.4", "lessThanOrEqual": "6.5.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6", "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": "5.13", "versionEndExcluding": "5.15.199"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.5.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/98fc9c2cc45cfcb56961a73de3ec69b474063fc0"}, {"url": "https://git.kernel.org/stable/c/1fb3f1bbfdb511034b0360dbeb0f6a8424ed2a5c"}, {"url": "https://git.kernel.org/stable/c/36daf050be3f6f067631dc52054de2d3b7cc849f"}, {"url": "https://git.kernel.org/stable/c/7ca4b085f430f3774c3838b3da569ceccd6a0177"}], "title": "ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/ext4/crypto.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "98fc9c2cc45cfcb56961a73de3ec69b474063fc0", "status": "affected", "version": "1ae98e295fa2577fb5e492200c58d10230e00e99", "versionType": "git"}, {"lessThan": "1fb3f1bbfdb511034b0360dbeb0f6a8424ed2a5c", "status": "affected", "version": "1ae98e295fa2577fb5e492200c58d10230e00e99", "versionType": "git"}, {"lessThan": "36daf050be3f6f067631dc52054de2d3b7cc849f", "status": "affected", "version": "1ae98e295fa2577fb5e492200c58d10230e00e99", "versionType": "git"}, {"lessThan": "7ca4b085f430f3774c3838b3da569ceccd6a0177", "status": "affected", "version": "1ae98e295fa2577fb5e492200c58d10230e00e99", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/ext4/crypto.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"lessThan": "5.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.199", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.54", "versionType": "semver"}, {"lessThanOrEqual": "6.5.*", "status": "unaffected", "version": "6.5.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.6", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "61D73F77-2E13-4DD9-9F33-30DDB2CAE391", "versionEndExcluding": "6.1.54", "versionStartIncluding": "5.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CA8C8B88-AF36-445D-A228-AD78F3615373", "versionEndExcluding": "6.5.4", "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\next4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}\n\nIf the filename casefolding fails, we'll be leaking memory from the\nfscrypt_name struct, namely from the 'crypto_buf.name' member.\n\nMake sure we free it in the error path on both ext4_fname_setup_filename()\nand ext4_fname_prepare_lookup() functions."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\next4: corrige fugas de memoria en ext4_fname_{setup_filename,prepare_lookup}\n\nSi el plegado de may\u00fasculas y min\u00fasculas del nombre de archivo falla, estaremos fugando memoria de la estructura fscrypt_name, espec\u00edficamente del miembro \u2019crypto_buf.name\u2019.\n\nAsegur\u00e9monos de liberarla en la ruta de error en ambas funciones ext4_fname_setup_filename() y ext4_fname_prepare_lookup()."}], "id": "CVE-2023-53662", "lastModified": "2026-10-28T20:10:00.163", "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"}]}, "published": "2025-10-07T16:15:49.927", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1fb3f1bbfdb511034b0360dbeb0f6a8424ed2a5c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/36daf050be3f6f067631dc52054de2d3b7cc849f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7ca4b085f430f3774c3838b3da569ceccd6a0177"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/98fc9c2cc45cfcb56961a73de3ec69b474063fc0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ext4: fix memory leaks in ext4_fname_{setup_filename,prepare_lookup}", "id": "2402190", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402190"}, "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-2023-53662", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "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"}, {"cpe": "cpe:/o:redhat:rhivos:1", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat In-Vehicle Operating System 1"}], "public_date": "2025-10-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53662\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53662\nhttps://lore.kernel.org/linux-cve-announce/2025100703-CVE-2023-53662-475f@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-10-08T13:36:52.978952+00:00", "updated": "2025-10-08T13:36:52.978979+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}