{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-22180", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-22180", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2022-01-19T00:21:31.093Z", "updatedAt": "2024-09-17T02:42:37.964Z", "importedAt": "2026-10-24T01:56:36.661Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Junos OS: EX2300 Series, EX2300-MP Series, EX3400 Series: A slow memory leak due to processing of specific IPv6 packets", "summary": "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.", "affected": [ { "vendor": "Juniper Networks", "product": "Junos OS", "platforms": [ "EX2300 Series, EX2300-MP Series, EX3400 Series" ], "versions": [ { "version": "18.4", "status": "affected", "versionType": "custom", "lessThan": "18.4R2-S10, 18.4R3-S10" }, { "version": "19.1", "status": "affected", "versionType": "custom", "lessThan": "19.1R3-S7" }, { "version": "19.2", "status": "affected", "versionType": "custom", "lessThan": "19.2R1-S8, 19.2R3-S4" }, { "version": "19.3", "status": "affected", "versionType": "custom", "lessThan": "19.3R3-S5" }, { "version": "19.4", "status": "affected", "versionType": "custom", "lessThan": "19.4R3-S7" }, { "version": "20.1", "status": "affected", "versionType": "custom", "lessThan": "20.1R3-S3" }, { "version": "20.2", "status": "affected", "versionType": "custom", "lessThan": "20.2R3-S3" }, { "version": "20.3", "status": "affected", "versionType": "custom", "lessThan": "20.3R3-S2" }, { "version": "20.4", "status": "affected", "versionType": "custom", "lessThan": "20.4R3-S1" }, { "version": "21.1", "status": "affected", "versionType": "custom", "lessThan": "21.1R2-S2, 21.1R3" }, { "version": "21.2", "status": "affected", "versionType": "custom", "lessThan": "21.2R1-S2, 21.2R2" }, { "version": "21.3", "status": "affected", "versionType": "custom", "lessThan": "21.3R1-S1, 21.3R2" } ] }, { "vendor": "Juniper Networks", "product": "Junos OS", "versions": [ { "version": "unspecified", "status": "unaffected", "versionType": "custom", "lessThan": "18.4R2-S10, 18.4R3-S10" } ] } ] } } }