SB2026102231 - Out-of-bounds read in Linux kernel bluetooth

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Main Vulnerability Database SB2026102231

SB2026102231 - Out-of-bounds read in Linux kernel bluetooth

Published: October 22, 2026

Security Bulletin ID SB2026102231
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Out-of-bounds read (CVE-ID: CVE-2026-98461)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to potentially cause a denial of service by triggering an out-of-bounds read in the kernel.

The vulnerability exists due to an out-of-bounds read in the Bluetooth is_filtered_packet() function when filtering event packets before their lengths are validated. A local user can supply a malformed event through a controller or vhci device to trigger reads beyond an empty event buffer or a truncated command event, potentially causing a kernel crash.


Remediation

Install update from vendor's website.

References