CVE-2026-98558Medium· 4.1▾ SunlitA flaw was found in the Linux kernel's networking subsystem. When a central processing unit (CPU) is taken offline, pending network packet buffers held in deferred processing queues are not properly flushed. A privileged local user or admi…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 22.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
Last analysed / modified upstream
0.2%
— → 4.1
none → medium
A flaw was found in the Linux kernel's networking subsystem. When a central processing unit (CPU) is taken offline, pending network packet buffers held in deferred processing queues are not properly flushed. A privileged local user or administrative action offlining a CPU during network device teardown can cause the kernel to stall indefinitely while waiting for memory pages to be returned, resulting in a Denial of Service (DoS).
kernel: net: flush skb_defer_nodes in dev_cpu_dead() — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.
Affected:
No fix planned:
Not affected:
Out of support scope
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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