CVE-2023-52895

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's not really defined behavior to reissue a multishot request directly. It's less efficient to do so as well, and not required to rearm anything like it is for singleshot poll requests.

The following products are affected by CVE-2023-52895 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2023-52895.

URL	Resource
https://git.kernel.org/stable/c/36fc7317cdb16cfeae0f879916995037bb615ac4
https://git.kernel.org/stable/c/8caa03f10bf92cb8657408a6ece6a8a73f96ce13
https://lore.kernel.org/linux-cve-announce/2024082111-CVE-2023-52895-5be2@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-52895
https://www.cve.org/CVERecord?id=CVE-2023-52895