CVE-2026-31890
Description
A flaw was found in Inspektor Gadget. The transfer mechanism of data from eBPF programs to userspace is based on a ring-buffer on Linux kernel versions newer than or equal to 5.8. The size of the ring-buffer is hard-coded to 256KB, and when gadget_reserve_buf fails due to insufficient space, the gadget silently cleans up without producing an alert. A malicious event source (e.g., a malicious container) can exploit this to cause the system to drop legitimate events.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Frequently Asked Questions
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