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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-80857

fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 0c7fca880a40a209a9c92be14143996d14b93ff6 to < a8bbb2a60513bf322170903c21462f0bf4f62be2affected
  • 204aa22a686bfee48daca7db620c1e017615f2ff to < 715cb86e33cda43f5224cdc3fd5610c0b6a46f7aaffected
  • 204aa22a686bfee48daca7db620c1e017615f2ff to < 64b0b5cacbd2fea88001464cb712c9dfc795b26eaffected
  • 300e812b882a174dca675d8028684001ad5826bcaffected
  • 6.18.25 to < 6.18.50affected
  • 7.0.2 to < 7.1affected

Linux Linux

Default version status: affected

  • 7.1affected
  • 0 to < 7.1unaffected
  • 6.18.50 to ≤ 6.18.*unaffected
  • 7.2.3 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References