qfq scheduler

  1. CVE-2026-22999: Linux QFQ Kernel UAF Fix and Impact

    A subtle memory-management mistake in the Linux kernel’s Quick Fair Queueing (QFQ) packet scheduler has been cataloged as CVE-2026-22999 and fixed upstream: an error path in qfq_change_class() can free the existing class and its qdisc when it should not, producing a use‑after‑free (UAF) that...
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    • linux kernel memory safety qfq scheduler vulnerability cve
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  2. CVE-2026-22976: Linux QFQ Kernel Patch Fixes Local NULL Pointer Dereference

    The Linux kernel's QFQ (Quick Fair Queueing) network scheduler was patched this month to fix a NULL pointer dereference that could crash a system when a qdisc reset deactivates an aggregate that is actually inactive — the flaw has been catalogued as CVE-2026-22976 and was published on January...
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    • cve 2026 22976 kernel security linux kernel qfq scheduler
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    • Forum: Security Alerts