SB2026090583 - Out-of-bounds read in Linux kernel ntfs

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2026-80869)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 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]

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.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/98634df5b1cb56c26299b7409227025ddb0167d8
• https://git.kernel.org/stable/c/c7a7e48e71ce915ec4cbd6e9f355590c1ecbc29a