SB20260720220 - Missing Release of Resource after Effective Lifetime in Linux kernel nvme host driver

Description

This security bulletin contains information about 1 vulnerability.

1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-64019)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 4.8 [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]

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.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1bf86336e4b6cf40873fda47a7fe191446864937
• https://git.kernel.org/stable/c/e50db059ec8e63bc50b1cc039e2502cb5ea75a70