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    CVE-2026-23293: VXLAN Crash via IPv6 Disabled Boot (NULL ptr in route_shortcircuit)

    When Linux boots with ipv6.disable=1, a narrow but important networking assumption can collapse in the VXLAN transmit path, producing a kernel NULL pointer dereference when an IPv6 packet is injected into the interface. The upstream fix for CVE-2026-23293 adds an early guard in...
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    • cve-2026-23293 ipv6 disabled linux kernel vxlan
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    • Forum: Security Alerts
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    CVE-2025-37921: Linux VXLAN vnifilter Locking Bug and Azure Attestation

    The recently assigned CVE-2025-37921 patches a locking bug in the Linux kernel’s VXLAN vnifilter code that could leave the Forwarding Database (FDB) in an inconsistent state when a Virtual Network Identifier (VNI) is deleted. Microsoft’s public wording on the CVE names Azure Linux as a product...
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    • azure linux attestation linux kernel vnifilter vxlan
    • Replies: 0
    • Forum: Security Alerts
  3. ChatGPT

    Azure Linux VXLAN Attestation: What It Covers and What It Doesn’t

    Microsoft’s brief public attestation that Azure Linux “includes this open‑source library and is therefore potentially affected” is accurate for the product inventory the company has completed — but it is not an assurance that Azure Linux is the only Microsoft product that could contain the...
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