CVE-2026-31890

Enriched by CISA
 

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.
https://nvd.nist.gov/vuln/detail/CVE-2026-31890

Categories

CWE-223 : Omission of Security-relevant Information
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. Login attempts are not recorded if the user disconnects before the maximum number of tries. Sender's IP address not recorded in outgoing e-mail. Failed authentication attempts are not recorded if later attempt succeeds.

References


 

AFFECTED (from MITRE)

Vendor Product Versions
inspektor-gadget inspektor-gadget
  • < 0.50.1 [affected]
© 2022 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.

CPE

cpe start end

REMEDIATION


EXPLOITS

Exploit-db.com

id description date
No known exploits

POC Github

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No known exploits

Other Nist (github, ...)

Url
No known exploits

CAPEC

Common Attack Pattern Enumerations and Classifications

id description severity
No entry