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CVE-2023-54063

fs/ntfs3: Fix OOB read in indx_insert_into_buffer PUBLISHED

Description (CNA)

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().

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 82cae269cfa953032fbb8980a7d554d60fb00b17 before cd7e1d67924081717c5c96ead758a1a77867689a; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before 17048287ac79abd33b275ac3b5738285d406481b; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before a7e5dba10ba1402dd6c2f961a70320770865c4a5; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before 4bf3b564e27a518f158a83d5e1a50064ed6136a0; affected 82cae269cfa953032fbb8980a7d554d60fb00b17 before b8c44949044e5f7f864525fdffe8e95135ce9ce5
Linux / Linuxaffected 5.15; unaffected 0 before 5.15; unaffected 5.15.111 through 5.15.*; unaffected 6.1.28 through 6.1.*; unaffected 6.2.15 through 6.2.*; unaffected 6.3.2 through 6.3.*; unaffected 6.4 through *

CWE

No CWE identifiers supplied.

References