CVE-2023-54063

fs/ntfs3: Fix OOB read in indx_insert_into_buffer

State: Published
Severity: 7.8 High
Published: Dec 24, 2025
Updated: Aug 5, 2026
Reserved: Dec 24, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

fs/ntfs3: Fix OOB read in indx_insert_into_buffer

Syzbot reported a OOB read bug:

BUG: KASAN: slab-out-of-bounds in indx_insert_into_buffer+0xaa3/0x13b0 fs/ntfs3/index.c:1755 Read of size 17168 at addr ffff8880255e06c0 by task syz-executor308/3630

Call Trace: <TASK> memmove+0x25/0x60 mm/kasan/shadow.c:54 indx_insert_into_buffer+0xaa3/0x13b0 fs/ntfs3/index.c:1755 indx_insert_entry+0x446/0x6b0 fs/ntfs3/index.c:1863 ntfs_create_inode+0x1d3f/0x35c0 fs/ntfs3/inode.c:1548 ntfs_create+0x3e/0x60 fs/ntfs3/namei.c:100 lookup_open fs/namei.c:3413 [inline]

If the member struct INDEX_BUFFER *index of struct indx_node is incorrect, that is, the value of __le32 used is greater than the value of __le32 total in struct INDEX_HDR. Therefore, OOB read occurs when memmove is called in indx_insert_into_buffer(). Fix this by adding a check in hdr_find_e().

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	82cae269cfa953032fbb8980a7d554d60fb00b17 to before cd7e1d67924081717c5c96ead758a1a77867689aAffected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before 17048287ac79abd33b275ac3b5738285d406481bAffected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before a7e5dba10ba1402dd6c2f961a70320770865c4a5Affected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before 4bf3b564e27a518f158a83d5e1a50064ed6136a0Affected 82cae269cfa953032fbb8980a7d554d60fb00b17 to before b8c44949044e5f7f864525fdffe8e95135ce9ce5Affected
LinuxLinux	5.15Affected before 5.15Not affected 5.15.111 through 5.15.Not affected 6.1.28 through 6.1.Not affected 6.2.15 through 6.2.Not affected 6.3.2 through 6.3.Not affected 6.4 and laterNot affected

Product

Versions

LinuxLinux

82cae269cfa953032fbb8980a7d554d60fb00b17 to before cd7e1d67924081717c5c96ead758a1a77867689aAffected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before 17048287ac79abd33b275ac3b5738285d406481bAffected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before a7e5dba10ba1402dd6c2f961a70320770865c4a5Affected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before 4bf3b564e27a518f158a83d5e1a50064ed6136a0Affected
82cae269cfa953032fbb8980a7d554d60fb00b17 to before b8c44949044e5f7f864525fdffe8e95135ce9ce5Affected

LinuxLinux

5.15Affected
before 5.15Not affected
5.15.111 through 5.15.*Not affected
6.1.28 through 6.1.*Not affected
6.2.15 through 6.2.*Not affected
6.3.2 through 6.3.*Not affected
6.4 and laterNot affected

References

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