{"id":"CVE-2018-5390","published":"2018-08-06T20:00:00Z","modified":"2024-08-05T05:33:44Z","title":"Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and…","vendor":"Linux","product":"Linux Kernel","tier":"core","eol":null,"affectedVersions":[{"vendor":"Linux","product":"Linux Kernel","versions":[">= 4.9, < 4.9*"]}],"description":{"text":"Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of service.","provenance":"source","from":"CVE.org"},"summary":{"text":"The flaw is in the Linux Kernel (versions 4.9 and later), specifically in its TCP handling, where tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() can be forced to run at high cost for every incoming packet.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:23:42Z"},"cvss":null,"epss":{"score":0.71767,"percentile":0.99423,"date":"2026-10-28","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":0,"pulses":[],"provenance":"machine"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2018:2785","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://www.kb.cert.org/vuls/id/962459","tags":["third-party-advisory","x_refsource_CERT-VN"]},{"url":"https://usn.ubuntu.com/3741-2/","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2776","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2933","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2403","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2395","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://usn.ubuntu.com/3763-1/","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2384","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://usn.ubuntu.com/3741-1/","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2402","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2948","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://usn.ubuntu.com/3742-2/","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"http://www.securitytracker.com/id/1041434","tags":["vdb-entry","x_refsource_SECTRACK"]},{"url":"https://usn.ubuntu.com/3732-2/","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"http://www.securityfocus.com/bid/104976","tags":["vdb-entry","x_refsource_BID"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/08/msg00014.html","tags":["mailing-list","x_refsource_MLIST"]},{"url":"http://www.securitytracker.com/id/1041424","tags":["vdb-entry","x_refsource_SECTRACK"]},{"url":"https://usn.ubuntu.com/3742-1/","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2924","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180824-linux-tcp","tags":["vendor-advisory","x_refsource_CISCO"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2789","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://www.debian.org/security/2018/dsa-4266","tags":["vendor-advisory","x_refsource_DEBIAN"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2645","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://usn.ubuntu.com/3732-1/","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2791","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2018:2790","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"http://www.openwall.com/lists/oss-security/2019/06/28/2","tags":["mailing-list","x_refsource_MLIST"]},{"url":"http://www.openwall.com/lists/oss-security/2019/07/06/3","tags":["mailing-list","x_refsource_MLIST"]},{"url":"http://www.openwall.com/lists/oss-security/2019/07/06/4","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://www.oracle.com/security-alerts/cpujul2020.html","tags":["x_refsource_MISC"]},{"url":"https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html","tags":["x_refsource_CONFIRM"]},{"url":"https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0","tags":["x_refsource_CONFIRM"]},{"url":"https://security.netapp.com/advisory/ntap-20180815-0003/","tags":["x_refsource_CONFIRM"]},{"url":"http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2018-004.txt","tags":["x_refsource_CONFIRM"]},{"url":"https://www.synology.com/support/security/Synology_SA_18_41","tags":["x_refsource_CONFIRM"]},{"url":"https://support.f5.com/csp/article/K95343321","tags":["x_refsource_CONFIRM"]},{"url":"https://www.a10networks.com/support/security-advisories/tcp-ip-cve-2018-5390-segmentsmack","tags":["x_refsource_CONFIRM"]},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=1a4f14bab1868b443f0dd3c55b689a478f82e72e","tags":["x_refsource_CONFIRM"]},{"url":"https://support.f5.com/csp/article/K95343321?utm_source=f5support&amp%3Butm_medium=RSS","tags":["x_refsource_CONFIRM"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-377115.pdf","tags":["x_refsource_CONFIRM"]},{"url":"http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20181031-02-linux-en","tags":["x_refsource_CONFIRM"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2018-17160","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-17160","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2018-08-06","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2018-5390","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":19.9,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.88,"detail":"percentile 0.9942"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":0.0,"detail":"no CVSS"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}