CVE-2026-90384
kernel: iomap: release the folio batch on iomap callback failures
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 6, 2026
Description
A flaw was found in the Linux kernel's iomap subsystem. This issue arises when iomap callback functions, specifically ->iomap_begin(), fail to release a "folio batch" of memory pages during certain error conditions. This resource management oversight, particularly when used by filesystems like XFS, could lead to unreleased memory resources. While the direct security impact is not explicitly detailed, this could potentially result in system instability or a denial of service (DoS) condition due to resource exhaustion.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime