io_uring

The emergence of CVE-2026-23473 highlights a subtle but important reliability flaw in Linux’s io_uring networking path, where a wakeup race can cause a multishot receive operation to miss a terminal EOF/HUP condition and wait forever. According to the published kernel description, the bug...

The Linux kernel’s io_uring subsystem is back in the security spotlight, this time for a bug centered on request cleanup in the read/write path. The issue, now tracked as CVE-2026-23259, is described as a failure to free a potentially allocated iovec when cache insertion fails during teardown...

CVE-2026-23113: A Small io_uring Fix With Outsized Implications for Linux Stability Linux kernel maintainers have landed yet another reminder that small-looking concurrency fixes can carry large operational consequences. CVE-2026-23113, described as “io_uring/io-wq: check IO_WQ_BIT_EXIT inside...

Microsoft’s brief MSRC note — that “Azure Linux includes this open‑source library and is therefore potentially affected” — is accurate for the product Microsoft checked, but it is deliberately scoped: an attestation that Azure Linux contains the upstream io_uring code path in question, not a...