{"id":"CVE-2023-53450","summary":"ext4: remove a BUG_ON in ext4_mb_release_group_pa()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: remove a BUG_ON in ext4_mb_release_group_pa()\n\nIf a malicious fuzzer overwrites the ext4 superblock while it is\nmounted such that the s_first_data_block is set to a very large\nnumber, the calculation of the block group can underflow, and trigger\na BUG_ON check.  Change this to be an ext4_warning so that we don't\ncrash the kernel.","modified":"2026-04-02T09:44:13.976379Z","published":"2025-10-01T11:42:22.074Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53450.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/185062a21976fbc38f2efd296951b02c4500cf65"},{"type":"WEB","url":"https://git.kernel.org/stable/c/463808f237cf73e98a1a45ff7460c2406a150a0b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/53c14e7cc2257191ba15425c15638fc4f8abb92b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/978e5e9111af18741449b81fefd531a622dd969a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b0fc279de4bf17e1710bb7e83906538ff8f11111"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf2a16eb4e6d06124bd8436d4546f61539a65f29"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d87a4e4094c9879fc8acdff8ce59fdffa979c8e0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef16d8a1798db1a1604ac44ca1bd73ec6bebf483"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53450.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53450"},{"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":"c9de560ded61faa5b754137b7753da252391c55a"},{"fixed":"d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b"},{"fixed":"ef16d8a1798db1a1604ac44ca1bd73ec6bebf483"},{"fixed":"185062a21976fbc38f2efd296951b02c4500cf65"},{"fixed":"b0fc279de4bf17e1710bb7e83906538ff8f11111"},{"fixed":"978e5e9111af18741449b81fefd531a622dd969a"},{"fixed":"d87a4e4094c9879fc8acdff8ce59fdffa979c8e0"},{"fixed":"bf2a16eb4e6d06124bd8436d4546f61539a65f29"},{"fixed":"53c14e7cc2257191ba15425c15638fc4f8abb92b"},{"fixed":"463808f237cf73e98a1a45ff7460c2406a150a0b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53450.json"}}],"schema_version":"1.7.5"}