{"cve":"CVE-2023-53294","nvd":{"published":"2025-09-16T08:15:38.683","modified":"2026-06-17T06:44:45.970","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix null-ptr-deref on inode->i_op in ntfs_lookup()\n\nSyzbot reported a null-ptr-deref bug:\n\nntfs3: loop0: Different NTFS' sector size (1024) and media sector size\n(512)\nntfs3: loop0: Mark volume as dirty due to NTFS errors\ngeneral protection fault, probably for non-canonical address\n0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nRIP: 0010:d_flags_for_inode fs/dcache.c:1980 [inline]\nRIP: 0010:__d_add+0x5ce/0x800 fs/dcache.c:2796\nCall Trace:\n <TASK>\n d_splice_alias+0x122/0x3b0 fs/dcache.c:3191\n lookup_open fs/namei.c:3391 [inline]\n open_last_lookups fs/namei.c:3481 [inline]\n path_openat+0x10e6/0x2df0 fs/namei.c:3688\n do_filp_open+0x264/0x4f0 fs/namei.c:3718\n do_sys_openat2+0x124/0x4e0 fs/open.c:1310\n do_sys_open fs/open.c:1326 [inline]\n __do_sys_open fs/open.c:1334 [inline]\n __se_sys_open fs/open.c:1330 [inline]\n __x64_sys_open+0x221/0x270 fs/open.c:1330\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIf the MFT record of ntfs inode is not a base record, inode->i_op can be\nNULL. And a null-ptr-deref may happen:\n\nntfs_lookup()\n    dir_search_u() # inode->i_op is set to NULL\n    d_splice_alias()\n        __d_add()\n            d_flags_for_inode() # inode->i_op->get_link null-ptr-deref\n\nFix this by adding a Check on inode->i_op before calling the\nd_splice_alias() function.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/254e69f284d7270e0abdc023ee53b71401c3ba0c","https://git.kernel.org/stable/c/2ba22cbc6a1cf4b58195adbee0b80262e53992d3","https://git.kernel.org/stable/c/d69d5e2a81df94534bdb468bcdd26060fcb7191a","https://git.kernel.org/stable/c/e78240bc4b94fc42854d65e657bb998100cc8e1b","https://git.kernel.org/stable/c/f8d9e062a695a3665c4635c4f216a75912687598"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:08:41.295252406+00:00"},"epss":{"cve":"CVE-2023-53294","score":0.00148,"percentile":0.03989,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}