{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53988","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-12-24T10:53:46.175Z","datePublished":"2025-12-24T10:55:27.762Z","dateUpdated":"2026-08-05T09:16:30.837Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T09:16:30.837Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix slab-out-of-bounds read in hdr_delete_de()\n\nHere is a BUG report from syzbot:\n\nBUG: KASAN: slab-out-of-bounds in hdr_delete_de+0xe0/0x150 fs/ntfs3/index.c:806\nRead of size 16842960 at addr ffff888079cc0600 by task syz-executor934/3631\n\nCall Trace:\n memmove+0x25/0x60 mm/kasan/shadow.c:54\n hdr_delete_de+0xe0/0x150 fs/ntfs3/index.c:806\n indx_delete_entry+0x74f/0x3670 fs/ntfs3/index.c:2193\n ni_remove_name+0x27a/0x980 fs/ntfs3/frecord.c:2910\n ntfs_unlink_inode+0x3d4/0x720 fs/ntfs3/inode.c:1712\n ntfs_rename+0x41a/0xcb0 fs/ntfs3/namei.c:276\n\nBefore using the meta-data in struct INDEX_HDR, we need to\ncheck index header valid or not. Otherwise, the corruptedi\n(or malicious) fs image can cause out-of-bounds access which\ncould make kernel panic."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The malicious INDEX_HDR fields arrive via a mounted NTFS volume (USB stick, loop-mounted image, NBD/VM disk), and the bug is triggered through a local rename()/unlink() syscall. No network protocol is involved, and physical access is not required since the image can be delivered as a file, so Local rather than Physical.\nAC:L - The attacker fully controls hdr->used, hdr->de_off and the entry size in the crafted image, so the oversized memmove length is chosen deterministically and fires on the first rename/unlink of the crafted directory entry. There is no race, no timing window, and no dependence on memory layout to reach the corruption.\nPR:N - The attacker needs no account or privilege on the target — they merely supply the crafted NTFS image or removable device, matching the established scoring for this ntfs3 hostile-image class. Once the volume is mounted, plain directory-write access is all that is needed to reach ntfs_rename().\nUI:R - A victim (or an automount daemon acting on their behalf, e.g. udisks2 on USB insertion) must mount the attacker's NTFS volume, and a rename/unlink must be performed against it. This is the standard user-interaction requirement for crafted-filesystem-image bugs.\nS:U - The out-of-bounds access corrupts kernel slab memory within the same kernel security authority. No VM, sandbox, or IOMMU boundary is crossed.\nC:H - The memmove reads up to ~16 MB past the slab object, and the callers immediately persist the buffer back to the volume via indx_write()/mi_write(), writing adjacent kernel heap contents onto the attacker's image for later retrieval. That is a large, effectively unbounded kernel-memory disclosure primitive.\nI:H - The same memmove writes that attacker-influenced multi-megabyte length starting inside the index buffer, overwriting arbitrary adjacent slab objects with shifted heap data. Heap corruption of this magnitude is leverageable for control-flow hijack and privilege escalation.\nA:H - An unbounded ~16 MB memmove past a ~1 KB kmalloc object destroys allocator metadata and touches unmapped memory, producing the KASAN-reported fault and a kernel panic. The commit message explicitly states the corrupted image \"could make kernel panic.\""}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/fslog.c","fs/ntfs3/index.c","fs/ntfs3/ntfs_fs.h"],"versions":[{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"c58ea97aa94f033ee64a8cb6587d84a9849b6216","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"9163a5b4ed290da4a7d23fa92533e0e81fd0166e","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"114204d25e1dffdd3a0c1cfbba219afd344f4b4f","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"4a034ece7e2877673d9085d6e7ed45e6ee40b761","status":"affected","versionType":"git"},{"version":"82cae269cfa953032fbb8980a7d554d60fb00b17","lessThan":"ab84eee4c7ab929996602eda7832854c35a6dda2","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs3/fslog.c","fs/ntfs3/index.c","fs/ntfs3/ntfs_fs.h"],"versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","status":"unaffected","versionType":"semver"},{"version":"5.15.111","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.28","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2.15","lessThanOrEqual":"6.2.*","status":"unaffected","versionType":"semver"},{"version":"6.3.2","lessThanOrEqual":"6.3.*","status":"unaffected","versionType":"semver"},{"version":"6.4","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.28"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.2.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.3.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/c58ea97aa94f033ee64a8cb6587d84a9849b6216"},{"url":"https://git.kernel.org/stable/c/9163a5b4ed290da4a7d23fa92533e0e81fd0166e"},{"url":"https://git.kernel.org/stable/c/114204d25e1dffdd3a0c1cfbba219afd344f4b4f"},{"url":"https://git.kernel.org/stable/c/4a034ece7e2877673d9085d6e7ed45e6ee40b761"},{"url":"https://git.kernel.org/stable/c/ab84eee4c7ab929996602eda7832854c35a6dda2"}],"title":"fs/ntfs3: Fix slab-out-of-bounds read in hdr_delete_de()","x_generator":{"engine":"bippy-1.2.0"}}}}