{"schemaVersion":3,"id":"CVE-2026-31890","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Inspektor Gadget is a set of tools and framework for data collection and system inspection on Kubernetes clusters and Linux hosts using eBPF. Prior to 0.50.1, in a situation where the ring-buffer of a gadget is – incidentally or maliciously – already full, the gadget will silently drop events. The include/gadget/buffer.h file contains definitions for the Buffer API that gadgets can use to, among the other things, transfer data from eBPF programs to userspace. For hosts running a modern enough Linux kernel (>= 5.8), this transfer mechanism is based on ring-buffers. The size of the ring-buffer for the gadgets is hard-coded to 256KB. When a gadget_reserve_buf fails because of insufficient space, the gadget silently cleans up without producing an alert. The lost count reported by the eBPF operator, when using ring-buffers – the modern choice – is hardcoded to zero. The vulnerability can be used by a malicious event source (e.g. a compromised container) to cause a Denial Of Service, forcing the system to drop events coming from other containers (or the same container). This vulnerability is fixed in 0.50.1.","dates":{"published":"2026-03-12T17:35:02.129Z","modified":"2026-03-13T16:25:05.936Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":4.8,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":4.8,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00154,"percentile":0.04122,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.010999999999999985,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00143},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00154,"percentile":0.04122}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00143,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00148,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00154,"percentile":0.04122}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"GITHUB_INSPEKTOR-GADGET_INSPEKTOR-GADGET","name":"Inspektor Gadget","source":"github","url":"https://github.com/inspektor-gadget/inspektor-gadget/security/advisories/GHSA-79qw-g77v-2vfh","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-223","name":"Omission of Security-relevant Information","description":"The product does not record or display information that would be important for identifying the source or nature of an attack, or determining if an action is safe.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/223.html"},{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling","description":"The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/770.html"}],"affected":[{"vendor":"inspektor-gadget","product":"inspektor-gadget","name":"inspektor-gadget","label":"inspektor-gadget","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 0.50.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.50.1","eol":null,"hubHref":"/vendor/inspektor-gadget/inspektor-gadget"},{"vendor":"linuxfoundation","product":"inspektor_gadget","name":"inspektor gadget","label":"inspektor_gadget","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 0.50.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.50.1","eol":null,"hubHref":"/vendor/linuxfoundation/inspektor_gadget"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/inspektor-gadget/inspektor-gadget/security/advisories/GHSA-wv52-frfv-mfh4","label":"github.com/inspektor-gadget/inspektor-gadget/security/advisories/GHSA-wv52-frfv-mfh4","hostname":"github.com","tags":["X Refsource CONFIRM","Exploit","Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-03-12T17:35:02.129Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-03-13T16:25:05.936Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":32,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T00:05:35.969Z","stale":false,"partial":false}}