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    CVE-2026-23343 XDP Fix: Signed Tailroom Warning Hardens Linux Fast Path

    The Linux networking stack is getting a small but important hardening fix that matters well beyond its one-line title. Microsoft has cataloged the issue as CVE-2026-23343, and the underlying upstream change is a Linux XDP patch that now warns when a calculated tailroom goes negative instead of...
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    • cve patch kernel security linux networking xdp and af_xdp
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    • Forum: Security Alerts
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    CVE-2026-23340 Linux qdisc race UAF fix: tx queue shrinking vs lockless dequeue

    CVE-2026-23340 has drawn attention because it sits squarely in a part of the Linux networking stack that most people never think about until something goes wrong: the qdisc layer that schedules packets before they hit a NIC. The bug is a race condition in the tx-queue shrinking path that can...
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    • linux networking qdisc race condition use-after-free virtio net
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    • Forum: Security Alerts
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    CVE-2025-68725: Fix for malformed GSO in BPF test infra

    A recently assigned CVE has drawn attention to a subtle but important correctness gap between BPF test infrastructure and the Linux Generic Segmentation Offload (GSO) machinery: CVE-2025-68725 — described as “bpf: Do not let BPF test infra emit invalid GSO types to stack” — fixes a case where a...
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    • bpf test infra gso offload kernel security linux networking
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    • Forum: Security Alerts
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