CVE-2023-54063
Unknown Unknown - Not Provided
Out-of-Bounds Read in Linux Kernel NTFS3 Index Buffer

Publication date: 2025-12-24

Last updated on: 2025-12-24

Assigner: kernel.org

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().
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-12-24
Last Modified
2025-12-24
Generated
2026-05-07
AI Q&A
2025-12-24
EPSS Evaluated
2026-05-05
NVD
CVE-2023-54063
EUVD
EUVD-2023-60263
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is an out-of-bounds (OOB) read bug in the Linux kernel's NTFS3 file system driver. It occurs in the function indx_insert_into_buffer when an incorrect value in the INDEX_BUFFER structure causes the code to read memory beyond the intended buffer size. Specifically, if the value used is greater than the total size defined in the INDEX_HDR structure, a memmove operation reads out-of-bounds memory, potentially leading to a kernel crash or other undefined behavior. The issue was fixed by adding a validation check in the hdr_find_e() function.


How can this vulnerability impact me? :

This vulnerability can lead to a kernel crash or instability due to out-of-bounds memory reads in the NTFS3 file system driver. Such behavior can be exploited to cause denial of service or potentially escalate privileges if combined with other vulnerabilities, impacting system reliability and security.


Ask Our AI Assistant
Need more information? Ask your question to get an AI reply (Powered by our expertise)
0/70
EPSS Chart