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CVE-2026-44778— Inspektor Gadget: Unprivileged container can crash USDT note parser via crafted ELF

Quick assessment

Affected
inspektor-gadget inspektor-gadget
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Inspektor Gadget 是一套用于在 Kubernetes 集群和 Linux 主机上进行数据采集和系统检查的工具与框架，其底层基于 eBPF 技术。在 0.28.0 至 0.53.1 版本中， 中的 USDT 笔记解析器存在一个漏洞：当包含自定义 USDT gadget 的 eBPF 段（ ）绑定到精心构造的 ELF 二进制文件时，非特权容器有可能导致具有特权的 Inspektor Gadget 进程崩溃或耗尽其内存。 具体而言， 函数在读取 节时，未验证 是否足够容纳三个地址字段，从而可能引发越界切片

CVSS 2.9 · Low

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-44778

Vulnerability Information
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Vulnerability Title
Inspektor Gadget: Unprivileged container can crash USDT note parser via crafted ELF
Source: CVE Program / CVE List V5
Vulnerability Description
Inspektor Gadget is a set of tools and framework for data collection and system inspection on Kubernetes clusters and Linux hosts using eBPF. From 0.28.0 until 0.53.1, the USDT note parser in pkg/uprobetracer/usdt.go can allow an unprivileged container to crash or exhaust the memory of the privileged Inspektor Gadget process when a custom gadget containing a SEC("usdt/...") eBPF section attaches to a crafted ELF binary. The getUsdtInfo() function reads the .note.stapsdt section without validating that DescSize is large enough for three address fields, allowing an out-of-bounds slice operation to panic, and it uses untrusted NameSize and DescSize values for allocations that can consume gigabytes of memory. The parser also invokes debug/elf without panic recovery, allowing other malformed ELF structures to terminate the process. No gadget shipped by Inspektor Gadget uses USDT probes, so only deployments using custom USDT gadgets are affected, and the demonstrated impact is denial of service rather than code execution or privilege escalation. This issue is fixed in version 0.53.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
inspektor-gadget inspektor-gadget >= 0.28.0, < 0.53.1 -

II. Public POCs for CVE-2026-44778

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III. Intelligence Information for CVE-2026-44778

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Patches & Fixes for CVE-2026-44778 (3)

Vendor Advisories for CVE-2026-44778 (1)

Vendor Pages for CVE-2026-44778 (1)

IV. Related Vulnerabilities

Same product: inspektor-gadget
Same vendor: inspektor-gadget
Same weakness: CWE-20

V. Comments for CVE-2026-44778

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