Stack-based buffer overflow in Linux kernel - CVE-2026-72194

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Main Vulnerability Database Vulnerabilities #VU143406

Stack-based buffer overflow in Linux kernel - CVE-2026-72194

Published: August 16, 2026


Vulnerability identifier: #VU143406
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72194
CWE-ID: CWE-121
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows an attacker with physical access to cause a denial of service.

The vulnerability exists due to stack-based buffer overflow in indx_find_buffer() in the ntfs3 filesystem driver when mounting a crafted NTFS filesystem and deleting a file that triggers index rebalancing. An attacker with physical access can provide a malicious NTFS image with circular index node references to cause a denial of service.

User interaction may be required in environments where removable media is mounted through desktop automount.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-gcp (Ubuntu package)

How to mitigate CVE-2026-72194

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux (Ubuntu package) - addressed in versions 7.0.0-34.34, 7.0.0-34.34.1, 7.0.0-34.34~24.04.1, 7.0.0-1012.12~24.04.1, 7.0.0-1013.13, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14, 7.0.0-1020.20
linux-gcp (Ubuntu package) - addressed in versions 7.0.0-1013.13, 7.0.0-1013.13~24.04.1, 7.0.0-1014.14

External References

Related Security Bulletins