{"id":"CVE-2023-52631","summary":"fs/ntfs3: Fix an NULL dereference bug","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix an NULL dereference bug\n\nThe issue here is when this is called from ntfs_load_attr_list().  The\n\"size\" comes from le32_to_cpu(attr-\u003eres.data_size) so it can't overflow\non a 64bit systems but on 32bit systems the \"+ 1023\" can overflow and\nthe result is zero.  This means that the kmalloc will succeed by\nreturning the ZERO_SIZE_PTR and then the memcpy() will crash with an\nOops on the next line.","modified":"2026-04-02T09:43:09.825302Z","published":"2024-04-02T06:22:07.699Z","related":["SUSE-SU-2024:2135-1","SUSE-SU-2024:2203-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52631.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/686820fe141ea0220fc6fdfc7e5694f915cf64b2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ae4acad41b0f93f1c26cc0fc9135bb79d8282d0b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b2dd7b953c25ffd5912dda17e980e7168bebcf6c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec1bedd797588fe38fc11cba26d77bb1d9b194c6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fb7bcd1722bc9bc55160378f5f99c01198fd14a7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52631.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52631"},{"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":"be71b5cba2e6485e8959da7a9f9a44461a1bb074"},{"fixed":"ae4acad41b0f93f1c26cc0fc9135bb79d8282d0b"},{"fixed":"ec1bedd797588fe38fc11cba26d77bb1d9b194c6"},{"fixed":"fb7bcd1722bc9bc55160378f5f99c01198fd14a7"},{"fixed":"686820fe141ea0220fc6fdfc7e5694f915cf64b2"},{"fixed":"b2dd7b953c25ffd5912dda17e980e7168bebcf6c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52631.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}