{"id":"DEBIAN-CVE-2023-53294","details":"In the Linux kernel, the following vulnerability has been resolved:  fs/ntfs3: Fix null-ptr-deref on inode-\u003ei_op in ntfs_lookup()  Syzbot reported a null-ptr-deref bug:  ntfs3: loop0: Different NTFS' sector size (1024) and media sector size (512) ntfs3: loop0: Mark volume as dirty due to NTFS errors general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] RIP: 0010:d_flags_for_inode fs/dcache.c:1980 [inline] RIP: 0010:__d_add+0x5ce/0x800 fs/dcache.c:2796 Call Trace:  \u003cTASK\u003e  d_splice_alias+0x122/0x3b0 fs/dcache.c:3191  lookup_open fs/namei.c:3391 [inline]  open_last_lookups fs/namei.c:3481 [inline]  path_openat+0x10e6/0x2df0 fs/namei.c:3688  do_filp_open+0x264/0x4f0 fs/namei.c:3718  do_sys_openat2+0x124/0x4e0 fs/open.c:1310  do_sys_open fs/open.c:1326 [inline]  __do_sys_open fs/open.c:1334 [inline]  __se_sys_open fs/open.c:1330 [inline]  __x64_sys_open+0x221/0x270 fs/open.c:1330  do_syscall_x64 arch/x86/entry/common.c:50 [inline]  do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80  entry_SYSCALL_64_after_hwframe+0x63/0xcd  If the MFT record of ntfs inode is not a base record, inode-\u003ei_op can be NULL. And a null-ptr-deref may happen:  ntfs_lookup()     dir_search_u() # inode-\u003ei_op is set to NULL     d_splice_alias()         __d_add()             d_flags_for_inode() # inode-\u003ei_op-\u003eget_link null-ptr-deref  Fix this by adding a Check on inode-\u003ei_op before calling the d_splice_alias() function.","modified":"2026-09-15T09:02:42.841107739Z","published":"2025-09-16T08:15:38.683Z","upstream":["CVE-2023-53294"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53294"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.37-1"}]}],"versions":["6.1.27-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53294.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53294.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53294.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}