CVE-2026-92694 - FastNetMon: IPv6 host counters map iterated without lock, racing concurrent inserts
CVE ID :CVE-2026-92694
Published : Nov. 5, 2026, 10:29 p.m. | 57 minutes ago
Description :FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, FastNetMon's IPv6 top-talkers screen-draw thread in draw_table_ipv6() in src/fastnetmon_logic.cpp iterates ipv6_host_counters.average_speed_map without holding counter_map_mutex while recalculate_speed() inserts new keys and may rehash the same map. The race requires networks_list to include the targeted IPv6 range. It causes confirmed undefined behavior under load; a process crash is plausible but was not observed, so reliable denial of service has not been established. No fixed release is available as of this review.
Severity: 0.0 | NA
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Published : Nov. 5, 2026, 10:29 p.m. | 57 minutes ago
Description :FastNetMon is a high-performance DDoS detector and sensor. In version 1.2.9 and earlier, FastNetMon's IPv6 top-talkers screen-draw thread in draw_table_ipv6() in src/fastnetmon_logic.cpp iterates ipv6_host_counters.average_speed_map without holding counter_map_mutex while recalculate_speed() inserts new keys and may rehash the same map. The race requires networks_list to include the targeted IPv6 range. It causes confirmed undefined behavior under load; a process crash is plausible but was not observed, so reliable denial of service has not been established. No fixed release is available as of this review.
Severity: 0.0 | NA
Visit the link for more details, such as CVSS details, affected products, timeline, and more...