CVE-2023-53396

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The\nreport below is triggered by a simple program 'rename' that renames a\nfile in an encrypted directory:\n\n unreferenced object 0xffff888101502840 (size 32):\n comm \"rename\", pid 9404, jiffies 4302582475 (age 435.735s)\n backtrace:\n __kmem_cache_alloc_node\n __kmalloc\n fscrypt_setup_filename\n do_rename\n ubifs_rename\n vfs_rename\n do_renameat2\n\nTo fix this we can remove the call to fscrypt_setup_filename as it's not\nneeded."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ubifs/dir.c"], "versions": [{"version": "c67bc98d1f0853bb196e9c48eab38b6f2ddab795", "lessThan": "43b2f7d690697182beed6f71aa57b7249d3cfc9c", "status": "affected", "versionType": "git"}, {"version": "278d9a243635f26c05ad95dcf9c5a593b9e04dc6", "lessThan": "9f565752b328fe53c9e42b7d4e4d89a1da63d738", "status": "affected", "versionType": "git"}, {"version": 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"https://git.kernel.org/stable/c/9f565752b328fe53c9e42b7d4e4d89a1da63d738"}, {"url": "https://git.kernel.org/stable/c/7e264f67b7d6580eff5c2696961039fd05c69258"}, {"url": "https://git.kernel.org/stable/c/517ddc0259d7a7231486bdafde8035c478bc4088"}, {"url": "https://git.kernel.org/stable/c/3a36d20e012903f45714df2731261fdefac900cb"}], "title": "ubifs: Fix memory leak in do_rename", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2023-53396", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], 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This name is\nnever used, and before returning to the caller the memory for it is not\nfreed.\n\nWhen running kmemleak on it we see that it is registered as a leak. 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This name is\nnever used, and before returning to the caller the memory for it is not\nfreed.\n\nWhen running kmemleak on it we see that it is registered as a leak. The\nreport below is triggered by a simple program 'rename' that renames a\nfile in an encrypted directory:\n\n unreferenced object 0xffff888101502840 (size 32):\n comm \"rename\", pid 9404, jiffies 4302582475 (age 435.735s)\n backtrace:\n __kmem_cache_alloc_node\n __kmalloc\n fscrypt_setup_filename\n do_rename\n ubifs_rename\n vfs_rename\n do_renameat2\n\nTo fix this we can remove the call to fscrypt_setup_filename as it's not\nneeded."}], "id": "CVE-2023-53396", "lastModified": "2026-06-17T06:45:12.623", "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-2023-53396", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-14T19:00:16.329006Z", "version": "2.0.3"}}]}, "published": "2025-09-18T14:15:42.817", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3a36d20e012903f45714df2731261fdefac900cb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/43b2f7d690697182beed6f71aa57b7249d3cfc9c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/517ddc0259d7a7231486bdafde8035c478bc4088"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7e264f67b7d6580eff5c2696961039fd05c69258"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9f565752b328fe53c9e42b7d4e4d89a1da63d738"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-401"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: ubifs: Fix memory leak in do_rename", "id": "2396426", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2396426"}, "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-2023-53396", "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": "Out of support scope", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53396\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53396\nhttps://lore.kernel.org/linux-cve-announce/2025091859-CVE-2023-53396-27d9@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-09-19T09:36:29.926408+00:00", "updated": "2025-09-19T09:36:29.926465+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}