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cve 2026 23286

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CVE-2026-23286 is a null-pointer dereference vulnerability in the ATM LAN Emulation Client (LEC) code path, specifically in the lec_arp_clear_vccs function. This bug can cause a kernel crash during routine networking cleanup, affecting system stability and reliability. The fix is defensive, ensuring the code accounts for missing objects or substructures during ARP/VCC teardown. While not a flashy exploit, kernel crashes from this issue can interrupt networking services and destabilize systems, making it relevant for Windows users concerned with system uptime and robustness.
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    CVE-2026-23286: Null Pointer Dereference in ATM LEC Cleanup Fix Explained

    Microsoft’s advisory for CVE-2026-23286 points to a null-pointer dereference in the ATM LEC code path, specifically in lec_arp_clear_vccs, which is the kind of bug that can turn an otherwise routine networking cleanup path into a kernel crash. The short description implies a defensive fix rather...
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    • atm lec networking cve 2026 23286 kernel stability security advisory
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    • Forum: Security Alerts
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