CVE-2026-98633

Recovery failure via unchecked firmware-dump append

Published Oct 18, 2026 · Updated Oct 18, 2026

Memory leakage in Linux btnxpuart disrupts Bluetooth recovery via firmware-dump processing when device coredumps are disabled. In nxp_process_fw_dump(), hci_devcd_append() rejects a cloned socket buffer without freeing it, and the error path skips nxp_set_ind_reset(). The affected path requires CONFIG_DEV_COREDUMP=n and firmware-dump processing; an attacker-controlled trigger, required privileges, and a system-wide crash are not documented.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in Linux btnxpuart disrupts Bluetooth recovery via firmware-dump processing when device coredumps are disabled. In nxp_process_fw_dump(), hci_devcd_append() rejects a cloned socket buffer without freeing it, and the error path skips nxp_set_ind_reset(). The affected path requires CONFIG_DEV_COREDUMP=n and firmware-dump processing; an attacker-controlled trigger, required privileges, and a system-wide crash are not documented.

The record

CVE
CVE-2026-98633
Published
Oct 18, 2026
Updated
Oct 18, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=6.15
  2. Affected versionversion=998e447f443f138c90faa6ff3845082af419070e <8a36598050cd1e5abb1d5ed42cc224cfcb538c4f
  3. Affected versionversion=998e447f443f138c90faa6ff3845082af419070e <edcb84ee607a9ddfc6f2771a7f399115f0b0f19d
  4. Affected versionversion=998e447f443f138c90faa6ff3845082af419070e <f2bbb36426581045a8bf7793da5419b9375e4348

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=6.15; version=998e447f443f138c90faa6ff3845082af419070e <8a36598050cd1e5abb1d5ed42cc224cfcb538c4f; version=998e447f443f138c90faa6ff3845082af419070e <edcb84ee607a9ddfc6f2771a7f399115f0b0f19d; version=998e447f443f138c90faa6ff3845082af419070e <f2bbb36426581045a8bf7793da5419b9375e4348

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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