TI-2026-64566 Aliases CVE-2026-100074 GHSA-5973-rj98-r6wc

bpf: Mark bpf_refcount field as unique

LOW 24Published 2026-09-25 · Updated 2026-10-21

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 4 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.00155 4th percentileScored 2026-11-07

Fix Partial Linux (Linux): 6.6.160, 6.12.114, 6.18.52 +2Red Hat: 4 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Linux	Linux	6.4 and later	6.6.160, 6.12.114, 6.18.52, 7.2.6, 7.3	Patch available	CNA

Linux VendorLinux Affected 6.4 and later Fixed in 6.6.160, 6.12.114, 6.18.52, 7.2.6, 7.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:linux:linux_kernel::::::::	6.4 to before 6.18.52; 6.19 to before 7.2.6	Vulnerable	Linux

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.4 to before 6.18.52; 6.19 to before 7.2.6 Vulnerable ·Linux

Remediation

Fix · CNA Linux (Linux) Fixed in 6.6.160, 6.12.114, 6.18.52, 7.2.6, 7.3

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat OpenShift Container Platform 4	Affected	No fix yet: Fix deferred
Red Hat OpenShift Container Platform 5	Affected	No fix yet: Fix deferred

Not affected: 5 products

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat OpenShift Container Platform 4

Timeline

2026-10-02 Threatist record created from CVE-2026-100074
2026-10-03 Alias added: GHSA-5973-rj98-r6wc
2026-10-19 Fix available: Linux/[email protected] · CNA
2026-10-21 Fix available: Linux/Linux@015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5e, Linux/Linux@20b3c72c1b83054c568d2322a95e217fdc281bc3, Linux/[email protected] +1 · CNA
2026-10-21 2 new references · CNA
2026-10-30 Affected versions changed · Red Hat
2026-10-30 CVSS score added · Red Hat

References

Patch 3

Other 2

TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3

See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences