Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: fuse: fix race between interrupt and resend After commit f8fce75fedf7 ("fuse:… (CVE-2026-80860)

CVE-2026-80860 addresses a race condition in the Linux kernel's FUSE subsystem. After a specific commit intended to clear interrupt entries, a WARN_ON condition could still be triggered due to a race between interrupt and resend operations involving the FR_SENT and FR_PENDING flags. The vulnerability arises because the clearing and setting of these flags were not properly synchronized with locking mechanisms. The fix moves the clearing of FR_SENT inside the fpq lock, the setting of FR_PENDING inside the fiq lock, and rechecks FR_SENT after acquiring the fiq lock in fuse_dev_queue_interrupt(), thus preventing the race condition.

The vulnerability could cause kernel warnings and potentially lead to instability or unexpected behavior in the FUSE subsystem due to race conditions between interrupt and resend operations. No information about exploitation or direct security impact such as privilege escalation or denial of service is provided.

A fix has been implemented in the Linux kernel to address this race condition by properly synchronizing flag manipulations with locking mechanisms. Users should update to the kernel version containing this fix once it is available. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor advisory or Linux kernel mailing lists for the official patch and remediation guidance.