GHSA-8279-rm4w-j7mpunknown

In the Linux kernel, the following vulnerability has been resolved: fuse: fix race between...

Published
September 4, 2026
Last Modified
September 21, 2026

🔗 CVE IDs covered (1)

CVE-2026-80860 →

📋 Description

In the Linux kernel, the following vulnerability has been resolved:

fuse: fix race between interrupt and resend

After commit f8fce75fedf7 ("fuse: clear intr_entry in fuse_resend and fuse_remove_pending_req") the WARN_ON(!list_empty(&req->intr_entry)) in fuse_request_free() still triggers due to the following race:

In request_wait_answer() if (test_bit(FR_SENT, &req->flags)) -> returns true

In fuse_chan_resend() clear_bit(FR_SENT, &req->flags)

In request_wait_answer() queue_interrupt(req)

Fix by:

  • move clearing FR_SENT inside fpq->lock

  • move setting FR_PENDING inside fiq->lock

  • recheck FR_SENT after acquiring fiq->lock in fuse_dev_queue_interrupt()

🔗 References (6)