GHSA-7rjr-qxc3-7hh3

GHSA-7rjr-qxc3-7hh3 PUBLISHED CVSS 5.5 MEDIUM

Record from GitHub Advisory Database · Published August 21, 2024

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.

Risk scores

CVSS 3.1

5.5

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Timeline

Aug 21, 2024 CVE Published
May 1, 2026 Security Advisory

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vulnetix vdb fixes GHSA-7rjr-qxc3-7hh3

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