CVE-2026-98731Hinoki check available

Packet truncation via receive-length overflow

Published Oct 18, 2026 · Updated Oct 18, 2026

Integer overflow in Linux's btintel_pcie driver allows attackers to truncate received packets via malformed ACL/ISO lengths. The btintel_pcie_recv_frame() function stores the header-plus-payload length in a 16-bit variable, allowing large lengths to wrap and bypass the packet-size check before skb_trim(). Exposure requires the Intel Bluetooth PCIe receive path; public evidence does not establish attacker privileges, over-the-air reachability, or consequences beyond packet truncation.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Integer overflow in Linux's btintel_pcie driver allows attackers to truncate received packets via malformed ACL/ISO lengths. The btintel_pcie_recv_frame() function stores the header-plus-payload length in a 16-bit variable, allowing large lengths to wrap and bypass the packet-size check before skb_trim(). Exposure requires the Intel Bluetooth PCIe receive path; public evidence does not establish attacker privileges, over-the-air reachability, or consequences beyond packet truncation.

The record

CVE
CVE-2026-98731
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=6.10
  2. Affected versionversion=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea
  3. Affected versionversion=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <b2cb5ea1dc8cf829816370fc1399e6a1d2d1bca9
  4. Affected versionversion=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <c3a3842c109ac130c6db3aa0014cc8cd344928ad
  5. Affected versionversion=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <c3b5e6da4ba6485bffda9753d8339c28855207aa

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=6.10; version=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <7dbeb6935ac331b0cba6c41cabd8e9d02d5f64ea; version=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <b2cb5ea1dc8cf829816370fc1399e6a1d2d1bca9; version=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <c3a3842c109ac130c6db3aa0014cc8cd344928ad; version=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <c3b5e6da4ba6485bffda9753d8339c28855207aa

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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