Out-of-bounds read in Linux kernel - CVE-2026-89781
Published: September 17, 2026
Vulnerability identifier: #VU150507
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89781
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise confidentiality, integrity, and availability.
The vulnerability exists due to improper validation of an on-disk offset in read_log_rec_buf() when mounting a crafted NTFS image. A remote attacker can mount a crafted NTFS image to compromise confidentiality, integrity, and availability.
Affected software
Linux kernel
How to mitigate CVE-2026-89781
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/1b2d31f1083beb80c55d1152249f652c1445a559
- https://git.kernel.org/stable/c/49f7cbc902b08b56eb7d2633163ecc57a0e7145a
- https://git.kernel.org/stable/c/53e56f7aa1d0f950a8bc2e4cdb3ba9fe45967531
- https://git.kernel.org/stable/c/700973cc65db405bde0368ccf88699390150943e
- https://git.kernel.org/stable/c/74a83aa05f73033af719771ab1f0c269928b4865
- https://git.kernel.org/stable/c/de603b9d377fab57a5e6432fa84a9f36b32c1636
- https://git.kernel.org/stable/c/df099bfdb57773ba7f40f8a9dcc82e75af277922