CVE-2026-31890
- Source
- https://cve.org/CVERecord?id=CVE-2026-31890
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31890.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-31890
- Aliases
-
- GHSA-wv52-frfv-mfh4
- Published
- 2026-03-12T17:35:02.129Z
- Modified
- 2026-04-10T05:42:12.538057Z
- Severity
-
- 4.8 (Medium) CVSS_V4 - 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 CVSS Calculator
- Summary
- Inspektor Gadget: Tracing Denial of Service via Event Flooding
- Details
-
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 gadgetreservebuf 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.
- Database specific
{ "cwe_ids": [ "CWE-223", "CWE-770" ], "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31890.json" }- References
Affected packages
Git / github.com/inspektor-gadget/inspektor-gadget
Affected ranges
- Type
- GIT
- Repo
- https://github.com/inspektor-gadget/inspektor-gadget
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed