{"id":"CVE-2026-5072","revision":"d84d20f9d52d40db878d2b0e82cd5011","records":[{"revision":"d84d20f9d52d40db878d2b0e82cd5011","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-5072","aliases":[],"title":"ptp: Potential Denial of Service via PTP Interval Shift","description":"A bitwise shift vulnerability in Zephyr's PTP subsystem allows a remote attacker to cause undefined behavior and potential system crashes. An attacker sends a crafted PTP_MSG_MANAGEMENT message to set an unvalidated negative log_announce_interval value in the port's data set. When a subsequent PTP_MSG_ANNOUNCE message is processed, port_timer_set_timeout_random computes a timeout as NSEC_PER_SEC >> -log_seconds; if the attacker-supplied value is sufficiently negative (e.g., -127), the shift amount exceeds the 64-bit integer width, triggering undefined behavior in C. This can cause a system crash via a compiler-generated illegal instruction trap on some architectures, or produce an erroneous zero timeout leading to resource starvation loops or other logical errors.","state":0,"publishedAt":"2026-05-22T07:00:36.025+00:00","modifiedAt":"2026-10-15T22:10:26.851+00:00","affected":[{"ecosystem":"Vendor product","name":"Zephyr","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageName\": \"Zephyr\",\n                    \"product\": \"Zephyr\",\n                    \"repo\": \"https://github.com/zephyrproject-rtos/zephyr\",\n                    \"vendor\": \"zephyrproject-rtos\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"4.3.1\",\n                            \"status\": \"affected\",\n                            \"version\": \"*\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3v98-458v-388r"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-5072","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-5072","identifiers":["CVE-2026-5072"]},"retained":false,"historicalAffected":[]}],"coverage":[]}