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CVE-2026-53366: ipv4 frag gap handling flaw in Linux kernel

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  • CVE-2026-53366: ipv4 frag gap handling flaw in Linux kernel — CVE ThreatInt
    A critical vulnerability in the Linux kernel’s IPv4 implementation was patched, addressing an issue in __ip_append_data() where the paged-allocation path failed to properly account for fragmentation gaps. This bug could lead to memory corruption or denial of service under specific packet conditions. No public exploit or CVSS score published yet; affected versions include recent Linux kernel releases with IPv4 paged allocation enabled. Recommended immediate kernel updates for systems processing untrusted IPv4 traffic.

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