Database/Control plane, storage & DevOps
linuxptp / ptp4l (transparent clock on little-endian): A crafted PTP packet against ptp4l running as a transparent
Impact
A crafted PTP packet against ptp4l running as a transparent clock on a little-endian machine — i.e. every x86 and ARM64 server in your cluster — produces a fault. Transparent-clock mode is exactly the configuration used when PTP is carried across switches inside the cluster, so the affected deployment is the mainstream one, not an edge case.
Who can reach it
Remote, unauthenticated — a crafted PTP message from anything that can reach the node's PTP port.
What to do
linuxptp package upgrade plus ptp4l restart. Same segmentation advice as the companion issue: PTP traffic should not be sourceable by tenant workloads.
References
This entry is curated: imported from vendor advisories with machine assistance, not yet individually verified. Confirm against your vendor's advisory before acting, and report anything wrong.