{"id":"CVE-2023-53396","state":"PUBLISHED","title":"ubifs: Fix memory leak in do_rename","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memory leak in do_rename\n\nIf renaming a file in an encrypted directory, function\nfscrypt_setup_filename allocates memory for a file name. 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.","publishedAt":"2025-09-18T13:33:37.360Z","updatedAt":"2026-05-23T15:28:45.902Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c67bc98d1f0853bb196e9c48eab38b6f2ddab795","status":"affected","lessThan":"43b2f7d690697182beed6f71aa57b7249d3cfc9c","versionType":"git"},{"version":"278d9a243635f26c05ad95dcf9c5a593b9e04dc6","status":"affected","lessThan":"9f565752b328fe53c9e42b7d4e4d89a1da63d738","versionType":"git"},{"version":"278d9a243635f26c05ad95dcf9c5a593b9e04dc6","status":"affected","lessThan":"7e264f67b7d6580eff5c2696961039fd05c69258","versionType":"git"},{"version":"278d9a243635f26c05ad95dcf9c5a593b9e04dc6","status":"affected","lessThan":"517ddc0259d7a7231486bdafde8035c478bc4088","versionType":"git"},{"version":"278d9a243635f26c05ad95dcf9c5a593b9e04dc6","status":"affected","lessThan":"3a36d20e012903f45714df2731261fdefac900cb","versionType":"git"},{"version":"17495eb2f7f08113b50aba298c2c1a045824c4f7","status":"affected","versionType":"git"},{"version":"868de33a39e0e1e91ed3ce4a23a65f30144d2443","status":"affected","versionType":"git"},{"version":"5.15.33","status":"affected","lessThan":"5.15.112","versionType":"semver"},{"version":"5.16.19","status":"affected","lessThan":"5.17","versionType":"semver"},{"version":"5.17.2","status":"affected","lessThan":"5.18","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ubifs/dir.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"5.15.112","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.28","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.15","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3.2","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ubifs/dir.c"]}],"references":["https://git.kernel.org/stable/c/43b2f7d690697182beed6f71aa57b7249d3cfc9c","https://git.kernel.org/stable/c/9f565752b328fe53c9e42b7d4e4d89a1da63d738","https://git.kernel.org/stable/c/7e264f67b7d6580eff5c2696961039fd05c69258","https://git.kernel.org/stable/c/517ddc0259d7a7231486bdafde8035c478bc4088","https://git.kernel.org/stable/c/3a36d20e012903f45714df2731261fdefac900cb"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53396.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53396","state":"PUBLISHED","datePublished":"2025-09-18T13:33:37.360Z","dateUpdated":"2026-05-23T15:28:45.902Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-17T14:54:09.738Z"},"containers":{"cna":{"title":"ubifs: Fix memory leak in do_rename","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memory leak in do_rename\n\nIf renaming a file in an encrypted directory, function\nfscrypt_setup_filename allocates memory for a file name. 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c67bc98d1f0853bb196e9c48eab38b6f2ddab795","status":"affected","lessThan":"43b2f7d690697182beed6f71aa57b7249d3cfc9c","versionType":"git"},{"version":"278d9a243635f26c05ad95dcf9c5a593b9e04dc6","status":"affected","lessThan":"9f565752b328fe53c9e42b7d4e4d89a1da63d738","versionType":"git"},{"version":"278d9a243635f26c05ad95dcf9c5a593b9e04dc6","status":"affected","lessThan":"7e264f67b7d6580eff5c2696961039fd05c69258","versionType":"git"},{"version":"278d9a243635f26c05ad95dcf9c5a593b9e04dc6","status":"affected","lessThan":"517ddc0259d7a7231486bdafde8035c478bc4088","versionType":"git"},{"version":"278d9a243635f26c05ad95dcf9c5a593b9e04dc6","status":"affected","lessThan":"3a36d20e012903f45714df2731261fdefac900cb","versionType":"git"},{"version":"17495eb2f7f08113b50aba298c2c1a045824c4f7","status":"affected","versionType":"git"},{"version":"868de33a39e0e1e91ed3ce4a23a65f30144d2443","status":"affected","versionType":"git"},{"version":"5.15.33","status":"affected","lessThan":"5.15.112","versionType":"semver"},{"version":"5.16.19","status":"affected","lessThan":"5.17","versionType":"semver"},{"version":"5.17.2","status":"affected","lessThan":"5.18","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ubifs/dir.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"5.15.112","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.28","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.15","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3.2","status":"unaffected","lessThanOrEqual":"6.3.*","versionType":"semver"},{"version":"6.4","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ubifs/dir.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/43b2f7d690697182beed6f71aa57b7249d3cfc9c"},{"url":"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T15:28:45.902Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.33","versionEndExcluding":"5.15.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.1.28"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.2.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.3.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","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"}],"version":"2.0.3","timestamp":"2026-01-14T19:00:16.329006Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-14T19:03:06.225Z"}}]}}}