CVE-2026-90345

Kernel crash via unchecked P2P interface access

Published Sep 17, 2026 · Updated Sep 17, 2026

Null dereferences in Linux Kernel's brcmfmac driver allow local users to crash the kernel via wireless action-frame handling. In p2p.c, brcmf_p2p_abort_action_frame accesses vif->ifp and brcmf_p2p_send_action_frame reads saved probe-request information without checking whether the P2P device interface exists. Triggering requires a brcmfmac-backed wireless interface and privileged userspace action-frame operations with that interface absent; no data access or privilege escalation is established.

CVSS severity4.4
Medium
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null dereferences in Linux Kernel's brcmfmac driver allow local users to crash the kernel via wireless action-frame handling. In p2p.c, brcmf_p2p_abort_action_frame accesses vif->ifp and brcmf_p2p_send_action_frame reads saved probe-request information without checking whether the P2P device interface exists. Triggering requires a brcmfmac-backed wireless interface and privileged userspace action-frame operations with that interface absent; no data access or privilege escalation is established.

The record

CVE
CVE-2026-90345
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
Linux Foundation
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.9
  2. Affected versionversion=6eda4e2c54255cd26a58d2fcec73ec3bff7a515b <1b1edb9ebed49099bdc924cef49a9aea8b552199
  3. Affected versionversion=6eda4e2c54255cd26a58d2fcec73ec3bff7a515b <f26e1b16904555e171292e183c3cfc1c38159fc5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Linux Foundation · Linux Kernelversion=3.9; version=6eda4e2c54255cd26a58d2fcec73ec3bff7a515b <1b1edb9ebed49099bdc924cef49a9aea8b552199; version=6eda4e2c54255cd26a58d2fcec73ec3bff7a515b <f26e1b16904555e171292e183c3cfc1c38159fc5

Published CVSS scores

4.4Amazon LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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