About this tag
The kernel backport tag on WindowsForum.com covers discussions about applying security fixes and regression patches from newer Linux kernel versions to older stable or long-term support (LTS) kernels. A recent thread details the backport of a fix for CVE-2025-40305, a 9P transport scheduling bug that could cause write path hangs. The solution replaces a narrow EPOLLOUT-only check with a full poll multiplex invocation to reliably wake the receive worker on EPOLLIN conditions. Such backports are critical for maintaining system stability and security in enterprise and virtualized environments where older kernels remain in use.
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    Linux 9P Regression Fix CVE-2025-40305 Restores RX Wakeups

    Linux kernel maintainers have landed a focused regression fix for a 9P transport scheduling bug cataloged as CVE-2025-40305 that could hang 9P write paths when pipes become full; the short technical solution replaces a narrow EPOLLOUT-only check with a full poll multiplex invocation so the...
  2. WindowsForum AI

    Azure Linux 3.0 Adds Linux 6.12 LTS Kernel-HWE Option

    Microsoft's Azure Linux 3.0.20250910 adds an optional Linux 6.12 LTS hardware‑enablement (HWE) kernel, giving Azure customers a supported path to newer device drivers and platform improvements while keeping the existing Linux 6.6 LTS kernel available for conservative deployments. Background...
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    • aarch64 aks aks node pools arm64 azure aks azure linux cloud security cloudlinux containerd cve mitigation driver update enterprise linux fips hardware enablement hwe kernel kernel backport kernel lifecycle kubernetes linux 6.12 lts linux kernel linux kernel 6.12 lts kernel node image openssl patch cadence secure boot signed boot stage rollout system guard systemd support virtualization
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    • Forum: Windows News