Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-64019
Published: July 20, 2026
Vulnerability identifier: #VU138633
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-64019
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource management in the nvme-pci data setup path when handling DMA mapping for PRP, SGL, or metadata descriptors. A local user can trigger data setup errors to cause a denial of service.
The issue occurs when allocation of tracking or descriptor structures fails, or when an invalid bio_vec is detected during PRP mapping.
How to mitigate CVE-2026-64019
Install security update from vendor's repository.