CVE-2026-98571Medium· 5.9▾ SunlitA flaw was found in the Linux kernel's stmmac network driver. This vulnerability can lead to a Denial of Service (DoS) or memory corruption when processing incoming network traffic under resource constraints. When the driver fails to alloc…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 32.5 · 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%
— → 5.9
none → medium
A flaw was found in the Linux kernel's stmmac network driver. This vulnerability can lead to a Denial of Service (DoS) or memory corruption when processing incoming network traffic under resource constraints. When the driver fails to allocate a network packet buffer, it recycles the underlying memory page without clearing its reference pointer. An attacker sending network packets during memory pressure could trigger this condition, causing the driver to reuse the recycled memory page and crash the system.
kernel: net: stmmac: clear stale buf->page after recycling on skb build failure — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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