Improper control of a resource through its lifetime in Linux kernel - CVE-2026-64157

Vulnerability identifier: #VU138476

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-64157

CWE-ID: CWE-664

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause data corruption.

The vulnerability exists due to improper state update in netfs_invalidate_folio() when partially invalidating a streaming-write folio. A local user can trigger partial invalidation of cached dirty data to cause data corruption.

Linux kernel
Ubuntu
linux-ibm (Ubuntu package)
linux-azure (Ubuntu package)
linux-aws (Ubuntu package)
linux-nvidia (Ubuntu package)
linux-nvidia-bos (Ubuntu package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
linux-ibm (Ubuntu package) - addressed in versions 7.0.0-1008.8, 7.0.0-1010.10
linux-azure (Ubuntu package) - addressed in versions 7.0.0-1009.9, 7.0.0-1010.10
linux-aws (Ubuntu package) - addressed in versions 7.0.0-1009.9, 7.0.0-1015.15
linux-nvidia (Ubuntu package) - addressed in versions 7.0.0-1016.16, 7.0.0-1016.16~24.04.1
linux-nvidia-bos (Ubuntu package) - update to 7.0.0-2016.16

• https://git.kernel.org/stable/c/3d9601c029b934b5b6a10f99791467b10eb6b211
• https://git.kernel.org/stable/c/6a3d27116be2c5fb9a03d5cf37c486ac517f3689
• https://git.kernel.org/stable/c/6d91acc7fb85d33ea58fca9b964a32a453937f4b
• https://git.kernel.org/stable/c/f6b2569ae29b666fd15ff2848684c445ba442a39

• Improper control of a resource through its lifetime in Linux kernel netfs
• Ubuntu update for linux-ibm
• Ubuntu update for linux-azure
• Ubuntu update for linux-aws
• Ubuntu update for linux-nvidia-bos
• Ubuntu update for linux-nvidia