CVE-2015-1142857: On multiple SR-IOV cars it is possible for VF's assigned to guests to send ethernet flow control pause fram...

Security readout for executives and security teams

A guest VM with an assigned SR-IOV network VF may be able to send Ethernet pause frames through the physical function, potentially disrupting network traffic on affected hosts. The public record does not provide a severity score, named firmware versions, or evidence of active exploitation. Most relevant to virtualization or cloud hosts using SR-IOV NIC passthrough, especially where VFs are assigned to guests outside the same trust boundary. Exposure is unclear for environments without SR-IOV or without affected drivers, DPDK, or firmware. Treat this as a targeted infrastructure risk, not a broad internet-facing emergency. Prioritize multi-tenant or untrusted-guest virtualization platforms using SR-IOV, because one guest could potentially degrade network availability for others on affected hardware. Mitigation focus: Check Intel and NIC vendor guidance for affected firmware and updates.; Update Linux ixgbe, i40e, and i40evf beyond the cited vulnerable commits.; Update DPDK beyond commit 3f12b9f23b6499ff66ec8b0de941fb469297e5d0 where applicable..

Prepared

Jun 7, 2026, 20:58 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.