{"id":"CVE-2023-54050","summary":"ubifs: Fix memleak when insert_old_idx() failed","details":"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-\u003elnum, zbr-\u003eoffs);\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.","modified":"2026-03-20T12:33:25.328858Z","published":"2025-12-24T12:23:00.366Z","related":["SUSE-SU-2026:0263-1","SUSE-SU-2026:0317-1","SUSE-SU-2026:0411-1","SUSE-SU-2026:0617-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54050.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/66e9f2fb3e753f820bec2a98e8c6387029988320"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6f2eee5457bc48b0426dedfd78cdbdea241a6edb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/79079cebbeed624b9d01cfcf1e3254ae1a1f6e14"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a6da0ab9847779e05a7416c7a98148b549de69ef"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b5fda08ef213352ac2df7447611eb4d383cce929"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cc29c7216d7f057eb0613b97dc38c7e1962a88d2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef9aac603659e9ffe7d69ae16e3f0fc0991a965b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54050.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54050"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1e51764a3c2ac05a23a22b2a95ddee4d9bffb16d"},{"fixed":"cc29c7216d7f057eb0613b97dc38c7e1962a88d2"},{"fixed":"6f2eee5457bc48b0426dedfd78cdbdea241a6edb"},{"fixed":"66e9f2fb3e753f820bec2a98e8c6387029988320"},{"fixed":"3ae75f82c33fa1b4ca2006b55c84f4ef4a428d4d"},{"fixed":"ef9aac603659e9ffe7d69ae16e3f0fc0991a965b"},{"fixed":"79079cebbeed624b9d01cfcf1e3254ae1a1f6e14"},{"fixed":"a6da0ab9847779e05a7416c7a98148b549de69ef"},{"fixed":"b5fda08ef213352ac2df7447611eb4d383cce929"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-54050.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.27"},{"fixed":"4.19.283"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.243"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.180"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.28"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.2.15"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.3.0"},{"fixed":"6.3.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-54050.json"}}],"schema_version":"1.7.5"}