Improper control of a resource through its lifetime in Linux kernel - CVE-2026-97997
Published: September 28, 2026
Vulnerability identifier: #VU152484
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97997
CWE-ID: CWE-664
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper descriptor state management in packed virtqueue handling when a scatter-gather mapping fails partway through adding a packed descriptor chain. A local user can submit an I/O request that triggers a failed mapping to cause a denial of service.
The issue typically occurs in swiotlb configurations under memory pressure with larger I/O requests.
Affected software
Linux kernel
How to mitigate CVE-2026-97997
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3