CVE-2026-98291Hinoki check available

Kernel memory corruption via RX descriptor off-by-one

Published Oct 6, 2026 · Updated Oct 6, 2026

Out-of-bounds access in the Bluetooth PCIe driver in Linux 6.10 allows attackers to corrupt kernel memory via an invalid RX descriptor index. btintel_pcie_submit_rx() accepts an index equal to the RX queue length, allowing btintel_pcie_prepare_rx() to access descriptor arrays beyond their allocated ends. Exposure requires an affected kernel using the Intel Bluetooth PCIe driver and an RX queue index that reaches the queue length; no network-only trigger is documented.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Out-of-bounds access in the Bluetooth PCIe driver in Linux 6.10 allows attackers to corrupt kernel memory via an invalid RX descriptor index. btintel_pcie_submit_rx() accepts an index equal to the RX queue length, allowing btintel_pcie_prepare_rx() to access descriptor arrays beyond their allocated ends. Exposure requires an affected kernel using the Intel Bluetooth PCIe driver and an RX queue index that reaches the queue length; no network-only trigger is documented.

The record

CVE
CVE-2026-98291
Published
Oct 6, 2026
Updated
Oct 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 6, 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?

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  1. Affected versionversion=6.10
  2. Affected versionversion=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <18464860ce27af0dccd2fc72830610b85b518cff
  3. Affected versionversion=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <2ea5a87a5a7ae58cb2662b8a7d06f209383e1765
  4. Affected versionversion=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <b5214d72bfdf8ef7744d0c8147e6ebb09b36b259
  5. Affected versionversion=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <de4c3c72bcc6e8474f70c22427f94ca44bccd890

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 <18464860ce27af0dccd2fc72830610b85b518cff; version=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <2ea5a87a5a7ae58cb2662b8a7d06f209383e1765; version=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <b5214d72bfdf8ef7744d0c8147e6ebb09b36b259; version=c2b636b3f788d10486a6691ad6dd3ec4c93bd78e <de4c3c72bcc6e8474f70c22427f94ca44bccd890

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.

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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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