Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-90384
Published: September 18, 2026
Vulnerability identifier: #VU151095
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-90384
CWE-ID: CWE-772
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 resource release in the iomap iterator folio batch handling when processing iomap zero-range operations that encounter filesystem callback errors. A local user can cause an iomap zero-range operation to encounter an iomap_begin or iomap_end callback error to cause a denial of service.
The issue can occur when a populated folio batch is not released after a callback error.
Affected software
Linux kernel
How to mitigate CVE-2026-90384
Install security update from vendor's repository.