CVE-2026-64260 PUBLISHED

fuse-uring: Avoid queue->stopped races and set/read that value under lock

Assigner: Linux
Reserved: 19.07.2026 Published: 25.07.2026 Updated: 25.07.2026

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

fuse-uring: Avoid queue->stopped races and set/read that value under lock

There are several readers of queue->stopped that check the value under lock, but fuse_uring_commit_fetch() did not and actually the value was not set under the lock in fuse_uring_abort_end_requests() either. Especially in fuse_uring_commit_fetch it is important to check under a lock, because due to races 'struct fuse_req' might be freed with fuse_request_end, but another thread/cpu might already do teardown work.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 4a9bfb9b6850fec0685447aed280533cf980de70 to 39c8e925b207afceffaa5382416ed405e0223a03 (excl.)
  • affected from 4a9bfb9b6850fec0685447aed280533cf980de70 to 4021a3a79eee551d95fe1e1e7c1b195d34ba8c08 (excl.)
  • affected from 4a9bfb9b6850fec0685447aed280533cf980de70 to b70a3aca16934c196f92abb17b01c1647b9bb63c (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.14 is affected
  • unaffected from 0 to 6.14 (excl.)
  • unaffected from 6.18.39 to 6.18.* (incl.)
  • unaffected from 7.1.4 to 7.1.* (incl.)
  • unaffected from 7.2-rc1 to * (incl.)

References