{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-08-04T10:15:07.914","vulnerabilities":[{"cve":{"id":"CVE-2022-22180","sourceIdentifier":"sirt@juniper.net","published":"2022-01-19T01:15:09.687","lastModified":"2026-06-17T04:27:56.390","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the processing of specific IPv6 packets on certain EX Series devices may lead to exhaustion of DMA memory causing a Denial of Service (DoS). Over time, exploitation of this vulnerability may cause traffic to stop being forwarded, or a crash of the fxpc process. An indication of the issue occurring may be observed through the following log messages: Sep 13 17:14:59 hostname : %PFE-3: fpc0 (buf alloc) failed allocating packet buffer Sep 13 17:14:59 hostname : %PFE-7: fpc0 brcm_pkt_buf_alloc:393 (buf alloc) failed allocating packet buffer When Packet DMA heap utilization reaches 99%, the system will become unstable. Packet DMA heap utilization can be monitored using the command: user@junos# request pfe execute target fpc0 timeout 30 command \"show heap\" ID Base Total(b) Free(b) Used(b) % Name -- ---------- ----------- ----------- ----------- --- ----------- 0 213301a8 536870488 387228840 149641648 27 Kernel 1 91800000 8388608 3735120 4653488 55 DMA 2 92000000 75497472 74452192 1045280 1 PKT DMA DESC 3 d330000 335544320 257091400 78452920 23 Bcm_sdk 4 96800000 184549376 2408 184546968 99 Packet DMA <<<< 5 903fffe0 20971504 20971504 0 0 Blob This issue affects: Juniper Networks Junos OS 18.4 versions prior to 18.4R2-S10, 18.4R3-S10 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.1 versions prior to 19.1R3-S7 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.3 versions prior to 19.3R3-S5 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.4 versions prior to 19.4R3-S7 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.1 versions prior to 20.1R3-S3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.2 versions prior to 20.2R3-S3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.3 versions prior to 20.3R3-S2 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.4 versions prior to 20.4R3-S1 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.1 versions prior to 21.1R2-S2, 21.1R3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.2 versions prior to 21.2R1-S2, 21.2R2 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.3 versions prior to 21.3R1-S1, 21.3R2 on EX2300 Series, EX2300-MP Series, EX3400 Series."},{"lang":"es","value":"Una vulnerabilidad de Comprobación inapropiada de Condiciones Inusuales o Excepcionales en el procesamiento de paquetes IPv6 específicos en determinados dispositivos de la serie EX puede conllevar a un agotamiento de la memoria DMA causando una denegación de servicio (DoS). Con el tiempo, una explotación de esta vulnerabilidad puede causar que el tráfico deje de ser reenviado, o un bloqueo del proceso fxpc. Una indicación de que el problema está ocurriendo puede observarse mediante los siguientes mensajes de registro: Sep 13 17:14:59 hostname : %PFE-3: fpc0 (buf alloc) failed allocating packet buffer Sep 13 17:14:59 hostname : %PFE-7: fpc0 brcm_pkt_buf_alloc:393 (buf alloc) failed allocating packet buffer Cuando El uso de la Pila de Packet DMA alcanza el 99%, el sistema se vuelve inestable. El uso de la pila de Packet DMA puede ser monitoreado usando el comando user@junos# request pfe execute target fpc0 timeout 30 command \"show heap\" ID Base Total(b) Free(b) Used(b) % Name -- ---------- ----------- ----------- ----------- --- ----------- 0 213301a8 536870488 387228840 149641648 27 Kernel 1 91800000 8388608 3735120 4653488 55 DMA 2 92000000 75497472 74452192 1045280 1 PKT DMA DESC 3 d330000 335544320 257091400 78452920 23 Bcm_sdk 4 96800000 184549376 2408 184546968 99 Packet DMA &lt;&lt;&lt;&lt; 5 903fffe0 20971504 20971504 0 0 Blob. Este problema afecta: Juniper Networks Junos OS versiones 18.4 anteriores a 18.4R2-S10, 18.4R3-S10 en las series EX2300, EX2300-MP, EX3400; 19.1 versiones anteriores a 19.1R3-S7 en las series EX2300, EX2300-MP, EX3400; 19.2 versiones anteriores a 19.2R1-S8, 19.2R3-S4 en las series EX2300, EX2300-MP, EX3400; 19. 3 versiones anteriores a 19.3R3-S5 en las series EX2300, EX2300-MP y EX3400; 19.4 versiones anteriores a 19.4R3-S7 en las series EX2300, EX2300-MP y EX3400; versiones 20.1 anteriores a 20.1R3-S3 en las series EX2300, EX2300-MP y EX3400; 20. 2 versiones anteriores a 20.2R3-S3 en las series EX2300, EX2300-MP y EX3400; versiones 20.3 anteriores a 20.3R3-S2 en las series EX2300, EX2300-MP y EX3400; versiones 20.4 anteriores a 20.4R3-S1 en las series EX2300, EX2300-MP y EX3400; 21. 1 versiones anteriores a 21.1R2-S2, 21.1R3 en las series EX2300, EX2300-MP, EX3400; 21.2 versiones anteriores a 21.2R1-S2, 21.2R2 en las series EX2300, EX2300-MP, EX3400; versiones 21.3 anteriores a 21.3R1-S1, 21.3R2 en las series EX2300, EX2300-MP, EX3400"}],"affected":[{"source":"sirt@juniper.net","affectedData":[{"vendor":"Juniper Networks","product":"Junos OS","platforms":["EX2300 Series, EX2300-MP Series, EX3400 Series"],"versions":[{"version":"18.4","lessThan":"18.4R2-S10, 18.4R3-S10","versionType":"custom","status":"affected"},{"version":"19.1","lessThan":"19.1R3-S7","versionType":"custom","status":"affected"},{"version":"19.2","lessThan":"19.2R1-S8, 19.2R3-S4","versionType":"custom","status":"affected"},{"version":"19.3","lessThan":"19.3R3-S5","versionType":"custom","status":"affected"},{"version":"19.4","lessThan":"19.4R3-S7","versionType":"custom","status":"affected"},{"version":"20.1","lessThan":"20.1R3-S3","versionType":"custom","status":"affected"},{"version":"20.2","lessThan":"20.2R3-S3","versionType":"custom","status":"affected"},{"version":"20.3","lessThan":"20.3R3-S2","versionType":"custom","status":"affected"},{"version":"20.4","lessThan":"20.4R3-S1","versionType":"custom","status":"affected"},{"version":"21.1","lessThan":"21.1R2-S2, 21.1R3","versionType":"custom","status":"affected"},{"version":"21.2","lessThan":"21.2R1-S2, 21.2R2","versionType":"custom","status":"affected"},{"version":"21.3","lessThan":"21.3R1-S1, 21.3R2","versionType":"custom","status":"affected"}]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"unspecified","lessThan":"18.4R2-S10, 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