{"api_version":"1","generated_at":"2026-10-29T10:15:05+00:00","cve":"CVE-2023-54050","urls":{"html":"https://cve.report/CVE-2023-54050","api":"https://cve.report/api/cve/CVE-2023-54050.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-54050","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-54050"},"summary":{"title":"ubifs: Fix memleak when insert_old_idx() failed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memleak when insert_old_idx() failed\n\nFollowing process will cause a memleak for copied up znode:\n\ndirty_cow_znode\n  zn = copy_znode(c, znode);\n  err = insert_old_idx(c, zbr->lnum, zbr->offs);\n  if (unlikely(err))\n     return ERR_PTR(err);   // No one refers to zn.\n\nFetch a reproducer in [Link].\n\nFunction copy_znode() is split into 2 parts: resource allocation\nand znode replacement, insert_old_idx() is split in similar way,\nso resource cleanup could be done in error handling path without\ncorrupting metadata(mem & disk).\nIt's okay that old index inserting is put behind of add_idx_dirt(),\nold index is used in layout_leb_in_gaps(), so the two processes do\nnot depend on each other.","state":"PUBLISHED","assigner":"Linux","published_at":"2025-12-24 13:16:06","updated_at":"2026-08-04 10:19:26"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d","name":"https://git.kernel.org/stable/c/3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ef9aac603659e9ffe7d69ae16e3f0fc0991a965b","name":"https://git.kernel.org/stable/c/ef9aac603659e9ffe7d69ae16e3f0fc0991a965b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/66e9f2fb3e753f820bec2a98e8c6387029988320","name":"https://git.kernel.org/stable/c/66e9f2fb3e753f820bec2a98e8c6387029988320","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/cc29c7216d7f057eb0613b97dc38c7e1962a88d2","name":"https://git.kernel.org/stable/c/cc29c7216d7f057eb0613b97dc38c7e1962a88d2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6f2eee5457bc48b0426dedfd78cdbdea241a6edb","name":"https://git.kernel.org/stable/c/6f2eee5457bc48b0426dedfd78cdbdea241a6edb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a6da0ab9847779e05a7416c7a98148b549de69ef","name":"https://git.kernel.org/stable/c/a6da0ab9847779e05a7416c7a98148b549de69ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b5fda08ef213352ac2df7447611eb4d383cce929","name":"https://git.kernel.org/stable/c/b5fda08ef213352ac2df7447611eb4d383cce929","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/79079cebbeed624b9d01cfcf1e3254ae1a1f6e14","name":"https://git.kernel.org/stable/c/79079cebbeed624b9d01cfcf1e3254ae1a1f6e14","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-54050","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54050","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d cc29c7216d7f057eb0613b97dc38c7e1962a88d2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d 6f2eee5457bc48b0426dedfd78cdbdea241a6edb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d 66e9f2fb3e753f820bec2a98e8c6387029988320 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d 3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2023","cve_id":"54050","cve":"CVE-2023-54050","epss":"0.001750000","percentile":"0.072060000","score_date":"2026-08-06","updated_at":"2026-08-07 00:14:20"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/ubifs/tnc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cc29c7216d7f057eb0613b97dc38c7e1962a88d2","status":"affected","version":"1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d","versionType":"git"},{"lessThan":"6f2eee5457bc48b0426dedfd78cdbdea241a6edb","status":"affected","version":"1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d","versionType":"git"},{"lessThan":"66e9f2fb3e753f820bec2a98e8c6387029988320","status":"affected","version":"1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d","versionType":"git"},{"lessThan":"3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d","status":"affected","version":"1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d","versionType":"git"},{"lessThan":"ef9aac603659e9ffe7d69ae16e3f0fc0991a965b","status":"affected","version":"1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d","versionType":"git"},{"lessThan":"79079cebbeed624b9d01cfcf1e3254ae1a1f6e14","status":"affected","version":"1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d","versionType":"git"},{"lessThan":"a6da0ab9847779e05a7416c7a98148b549de69ef","status":"affected","version":"1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d","versionType":"git"},{"lessThan":"b5fda08ef213352ac2df7447611eb4d383cce929","status":"affected","version":"1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/ubifs/tnc.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.27"},{"lessThan":"2.6.27","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"4.19.*","status":"unaffected","version":"4.19.283","versionType":"semver"},{"lessThanOrEqual":"5.4.*","status":"unaffected","version":"5.4.243","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.180","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.111","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.28","versionType":"semver"},{"lessThanOrEqual":"6.2.*","status":"unaffected","version":"6.2.15","versionType":"semver"},{"lessThanOrEqual":"6.3.*","status":"unaffected","version":"6.3.2","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.19.283","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.4.243","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.180","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.111","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.28","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.2.15","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.3.2","versionStartIncluding":"2.6.27","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.4","versionStartIncluding":"2.6.27","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memleak when insert_old_idx() failed\n\nFollowing process will cause a memleak for copied up znode:\n\ndirty_cow_znode\n  zn = copy_znode(c, znode);\n  err = insert_old_idx(c, zbr->lnum, zbr->offs);\n  if (unlikely(err))\n     return ERR_PTR(err);   // No one refers to zn.\n\nFetch a reproducer in [Link].\n\nFunction copy_znode() is split into 2 parts: resource allocation\nand znode replacement, insert_old_idx() is split in similar way,\nso resource cleanup could be done in error handling path without\ncorrupting metadata(mem & disk).\nIt's okay that old index inserting is put behind of add_idx_dirt(),\nold index is used in layout_leb_in_gaps(), so the two processes do\nnot depend on each other."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:17:20.960Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/cc29c7216d7f057eb0613b97dc38c7e1962a88d2"},{"url":"https://git.kernel.org/stable/c/6f2eee5457bc48b0426dedfd78cdbdea241a6edb"},{"url":"https://git.kernel.org/stable/c/66e9f2fb3e753f820bec2a98e8c6387029988320"},{"url":"https://git.kernel.org/stable/c/3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d"},{"url":"https://git.kernel.org/stable/c/ef9aac603659e9ffe7d69ae16e3f0fc0991a965b"},{"url":"https://git.kernel.org/stable/c/79079cebbeed624b9d01cfcf1e3254ae1a1f6e14"},{"url":"https://git.kernel.org/stable/c/a6da0ab9847779e05a7416c7a98148b549de69ef"},{"url":"https://git.kernel.org/stable/c/b5fda08ef213352ac2df7447611eb4d383cce929"}],"title":"ubifs: Fix memleak when insert_old_idx() failed","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2023-54050","datePublished":"2025-12-24T12:23:00.366Z","dateReserved":"2025-12-24T12:21:05.090Z","dateUpdated":"2026-08-04T09:17:20.960Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-24 13:16:06","lastModifiedDate":"2026-08-04 10:19:26","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2023","CveId":"54050","Ordinal":"1","Title":"ubifs: Fix memleak when insert_old_idx() failed","CVE":"CVE-2023-54050","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"54050","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: Fix memleak when insert_old_idx() failed\n\nFollowing process will cause a memleak for copied up znode:\n\ndirty_cow_znode\n  zn = copy_znode(c, znode);\n  err = insert_old_idx(c, zbr->lnum, zbr->offs);\n  if (unlikely(err))\n     return ERR_PTR(err);   // No one refers to zn.\n\nFetch a reproducer in [Link].\n\nFunction copy_znode() is split into 2 parts: resource allocation\nand znode replacement, insert_old_idx() is split in similar way,\nso resource cleanup could be done in error handling path without\ncorrupting metadata(mem & disk).\nIt's okay that old index inserting is put behind of add_idx_dirt(),\nold index is used in layout_leb_in_gaps(), so the two processes do\nnot depend on each other.","Type":"Description","Title":"ubifs: Fix memleak when insert_old_idx() failed"}]}}}