CVE-2026-80860
Dashboard / Vulnerabilities / CVE-2026-80860
Summary: fuse: fix race between interrupt and resend
Details: 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: https://git.kernel.org/stable/c/0f930904452945f409eeeb0c9afa08bf27185cb1, https://git.kernel.org/stable/c/26fbe4bc3ef3ab0200407681cbef182af5d151de, https://git.kernel.org/stable/c/67ddf061790e833d7e34f9dc901866c9fb25d72d, https://git.kernel.org/stable/c/ed9c881f3b498383f73c42712b359419da42a7b0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80860.json, https://nvd.nist.gov/vuln/detail/CVE-2026-80860, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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