CVE-2026-100074

Undergoing Analysis Undergoing Analysis - In Progress

BPF Reference Counting Field Marked Unique in Linux Kernel

Publication date: 2026-09-25

Last updated on: 2026-10-02

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark bpf_refcount field as unique BPF_REFCOUNT is not marked as a unique field, while it should be. Fix this oversight.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-25

Last Modified

2026-10-02

Generated

2026-10-16

AI Q&A

2026-09-25

EPSS Evaluated

2026-10-14

NVD

CVE-2026-100074

EUVD

EUVD-2026-87054

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 6.19 (inc) to 7.2.6 (exc)
linux	linux_kernel	From 6.4 (inc) to 6.18.52 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is in the Linux kernel where the BPF_REFCOUNT field was not marked as a unique field but should have been. This oversight could lead to incorrect reference counting in BPF (Berkeley Packet Filter) operations.

Detection Guidance

This vulnerability is specific to the Linux kernel's BPF_REFCOUNT field not being marked as unique. Detection requires checking kernel source code or running commands to inspect BPF-related components. Use 'uname -r' to check kernel version, then examine kernel headers or source for BPF_REFCOUNT usage. No direct network detection commands are applicable.

Impact Analysis

This vulnerability may cause incorrect memory management in BPF programs, potentially leading to crashes, memory leaks, or privilege escalation if exploited.

Mitigation Strategies

Update the Linux kernel to the latest patched version to resolve the BPF_REFCOUNT field marking issue.

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