Out-of-bounds read in Linux kernel - CVE-2026-80869
Published: September 5, 2026
Vulnerability identifier: #VU147052
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80869
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to access memory out of bounds.
The vulnerability exists due to improper bounds checking in the ntfs_read_inode_mount() attribute-list walk when mounting a crafted NTFS filesystem. A local user can provide an attribute-list entry with a length too short for subsequently accessed fields to access memory out of bounds.
The condition occurs when the on-disk attribute-list size is a multiple of the sector size.
Affected software
Linux kernel
How to mitigate CVE-2026-80869
Install security update from vendor's repository.