CVE-2026-80857

In the Linux kernel, the following vulnerability has been resolved: fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free The abort_on_kill path in request_wait_answer() calls fuse_abort_conn() and returns without waiting for FR_FINISHED. If fuse_dev_do_write() is concurrently processing the same request (FR_LOCKED set), the caller frees req->args while it is still being accessed, causing a use-after-free. Fix this by jumping to the existing wait_event(FR_FINISHED) instead of returning early. The wait will not hang because fuse_abort_conn() ensures all requests are ended.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/64b0b5cacbd2fea88001464cb712c9dfc795b26e
https://git.kernel.org/stable/c/715cb86e33cda43f5224cdc3fd5610c0b6a46f7a
https://git.kernel.org/stable/c/a8bbb2a60513bf322170903c21462f0bf4f62be2

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-04 16:18

Updated : 2026-09-07 16:17

NVD link : CVE-2026-80857

Mitre link : CVE-2026-80857

CVE.ORG link : CVE-2026-80857

JSON object : View

Products Affected

No product.

CWE

No CWE.

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