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Change History

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

io_uring/poll: don't reissue in case of poll race on multishot request

A previous commit fixed a poll race that can occur, but it's only
applicable for multishot requests. For a multishot request, we can safely
ignore a spurious wakeup, as we never leave the waitqueue to begin with.

A blunt reissue of a multishot armed request can cause us to leak a
buffer, if they are ring provided. While this seems like a bug in itself,
it'

kernel.org https://git.kernel.org/stable/c/36fc7317cdb16cfeae0f879916995037bb615ac4 [No types assigned]

kernel.org https://git.kernel.org/stable/c/8caa03f10bf92cb8657408a6ece6a8a73f96ce13 [No types assigned]