{"cve":"CVE-2024-47678","nvd":{"published":"2024-10-21T12:15:04.837","modified":"2026-08-04T11:20:39.113","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nicmp: change the order of rate limits\n\nICMP messages are ratelimited :\n\nAfter the blamed commits, the two rate limiters are applied in this order:\n\n1) host wide ratelimit (icmp_global_allow())\n\n2) Per destination ratelimit (inetpeer based)\n\nIn order to avoid side-channels attacks, we need to apply\nthe per destination check first.\n\nThis patch makes the following change :\n\n1) icmp_global_allow() checks if the host wide limit is reached.\n   But credits are not yet consumed. This is deferred to 3)\n\n2) The per destination limit is checked/updated.\n   This might add a new node in inetpeer tree.\n\n3) icmp_global_consume() consumes tokens if prior operations succeeded.\n\nThis means that host wide ratelimit is still effective\nin keeping inetpeer tree small even under DDOS.\n\nAs a bonus, I removed icmp_global.lock as the fast path\ncan use a lock-free operation.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":5.5},"cwes":["CWE-203"],"references":["https://git.kernel.org/stable/c/483397b4ba280813e4a9c161a0a85172ddb43d19","https://git.kernel.org/stable/c/662ec52260cc07b9ae53ecd3925183c29d34288b","https://git.kernel.org/stable/c/8c2bd38b95f75f3d2a08c93e35303e26d480d24e","https://git.kernel.org/stable/c/997ba8889611891f91e8ad83583466aeab6239a3","https://git.kernel.org/stable/c/a7722921adb046e3836eb84372241f32584bdb07"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:56:33.105311382+00:00"},"epss":{"cve":"CVE-2024-47678","score":0.00608,"percentile":0.49127,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}