{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53276", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-16T08:09:37.990Z", "datePublished": "2025-09-16T08:11:11.328Z", "dateUpdated": "2026-05-11T19:41:47.586Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:41:47.586Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Free memory for tmpfile name\n\nWhen opening a ubifs tmpfile on an encrypted directory, function\nfscrypt_setup_filename allocates memory for the name that is to be\nstored in the directory entry, but after the name has been copied to the\ndirectory entry inode, the memory is not freed.\n\nWhen running kmemleak on it we see that it is registered as a leak. The\nreport below is triggered by a simple program 'tmpfile' just opening a\ntmpfile:\n\n unreferenced object 0xffff88810178f380 (size 32):\n comm \"tmpfile\", pid 509, jiffies 4294934744 (age 1524.742s)\n backtrace:\n __kmem_cache_alloc_node\n __kmalloc\n fscrypt_setup_filename\n ubifs_tmpfile\n vfs_tmpfile\n path_openat\n\nFree this memory after it has been copied to the inode." } ], "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": "f4f61d2cc6d8789a52245a4733b3e5643be154f3", "lessThan": "8ad8c67a897e68426e85990ebfe0a7d1f71fc79f", "status": "affected", "versionType": "git" }, { "version": "f4f61d2cc6d8789a52245a4733b3e5643be154f3", "lessThan": "107d481642c356a5668058066360fc473911e628", "status": "affected", "versionType": "git" }, { "version": "f4f61d2cc6d8789a52245a4733b3e5643be154f3", "lessThan": "823f554747f8aafaa965fb2f3ae794110ed429ef", "status": "affected", "versionType": "git" }, { "version": "f4f61d2cc6d8789a52245a4733b3e5643be154f3", "lessThan": "b8f444a4fadfb5070ed7e298e0a5ceb4a18014f3", "status": "affected", "versionType": "git" }, { "version": "f4f61d2cc6d8789a52245a4733b3e5643be154f3", "lessThan": "ce840284929b75dbbf062e0ce7fcb78a63b08b5e", "status": "affected", "versionType": "git" }, { "version": "f4f61d2cc6d8789a52245a4733b3e5643be154f3", "lessThan": "29738e1bcc799dd754711d4e4aab967f0c018175", "status": "affected", "versionType": "git" }, { "version": "f4f61d2cc6d8789a52245a4733b3e5643be154f3", "lessThan": "fd197308c0e4f738c7ea687d5332035c5753881c", "status": "affected", "versionType": "git" }, { "version": "f4f61d2cc6d8789a52245a4733b3e5643be154f3", "lessThan": "1e43d4284bdc3bd34bd770fea13910ac37ab0618", "status": "affected", "versionType": "git" }, { "version": "f4f61d2cc6d8789a52245a4733b3e5643be154f3", "lessThan": "1fb815b38bb31d6af9bd0540b8652a0d6fe6cfd3", "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/ubifs/dir.c" ], "versions": [ { "version": "4.10", "status": "affected" }, { "version": "0", "lessThan": "4.10", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.315", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.283", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.243", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.180", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.111", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.28", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.15", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3.2", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4", "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": "4.10", "versionEndExcluding": "4.14.315" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "4.19.283" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.4.243" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.10.180" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.15.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.1.28" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.2.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.3.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.4" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/8ad8c67a897e68426e85990ebfe0a7d1f71fc79f" }, { "url": "https://git.kernel.org/stable/c/107d481642c356a5668058066360fc473911e628" }, { "url": "https://git.kernel.org/stable/c/823f554747f8aafaa965fb2f3ae794110ed429ef" }, { "url": "https://git.kernel.org/stable/c/b8f444a4fadfb5070ed7e298e0a5ceb4a18014f3" }, { "url": "https://git.kernel.org/stable/c/ce840284929b75dbbf062e0ce7fcb78a63b08b5e" }, { "url": "https://git.kernel.org/stable/c/29738e1bcc799dd754711d4e4aab967f0c018175" }, { "url": "https://git.kernel.org/stable/c/fd197308c0e4f738c7ea687d5332035c5753881c" }, { "url": "https://git.kernel.org/stable/c/1e43d4284bdc3bd34bd770fea13910ac37ab0618" }, { "url": "https://git.kernel.org/stable/c/1fb815b38bb31d6af9bd0540b8652a0d6fe6cfd3" } ], "title": "ubifs: Free memory for tmpfile name", "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-2023-53276", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2026-01-14T18:07:02.831700Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-401", "description": "CWE-401 Missing Release of Memory after Effective Lifetime" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:12:54.149Z" } } ] } }