Linux
CVE-2026-99265: In the Linux kernel, the following vulnerability has been resolved: io_uring/openclose: keep the lock in io_pipe_fixed() io_pipe_fixed() installs both ends of
CVE-2026-99265 Nov 3, 2026 Source: Vendor
In the Linux kernel, the following vulnerability has been resolved:
io_uring/openclose: keep the lock in io_pipe_fixed()
io_pipe_fixed() installs both ends of the pipe in the fixed file table,
drops ->uring_lock, and copies the slot numbers to the application. If
that faults, it takes the lock again and removes whatever is in these
slots.
If the request is run by io-wq the lock really is dropped in between, and
the slots are visible to everybody else. By the time the error path gets
to them,
Source of record
The credited names below are quoted verbatim from the vendor's own advisory:
https://nvd.nist.gov/vuln/detail/CVE-2026-99265
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