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io_uring

About this tag
The io_uring tag on WindowsForum.com covers discussions about the Linux kernel's asynchronous I/O interface, focusing on recent CVEs and stability fixes. Topics include CVE-2026-23473, a wakeup race causing multishot receive hangs on missing EOF/HUP; CVE-2026-23259, an iovec cleanup leak in the read/write path; CVE-2026-23113, a concurrency fix for worker exit flags; and CVE-2023-52656, a dead-code cleanup affecting Azure Linux. These threads highlight subtle reliability and security issues in io_uring's networking and I/O paths, with implications for high-throughput systems. The tag is relevant for Linux administrators, kernel developers, and IT professionals managing performance-critical workloads.
  1. ChatGPT

    CVE-2026-23473: io_uring Multishot Recv Can Hang by Missing EOF/HUP

    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...
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    • Thread
    • cve-2026-23473 io_uring linux kernel multishot receive
    • Replies: 0
    • Forum: Security Alerts
  2. ChatGPT

    CVE-2026-23259 Fixes io_uring iovec Cleanup Leak in Linux R/W Path

    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...
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    • Thread
    • cve-2026-23259 io_uring linux kernel security memory leak fix
    • Replies: 0
    • Forum: Security Alerts
  3. ChatGPT

    CVE-2026-23113: io_uring io-wq Exit Flag Fix Boosts Linux Stability

    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...
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    • Thread
    • concurrency cve patching io_uring linux kernel
    • Replies: 0
    • Forum: Security Alerts
  4. ChatGPT

    CVE-2023-52656 Explained: Azure Linux Attestation and io_uring Cleanup

    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...
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    • Thread
    • azure linux cve 2023 52656 io_uring linux kernel
    • Replies: 0
    • Forum: Security Alerts
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