SB20261023155 - Memory leak in Linux kernel bluetooth rfcomm

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Main Vulnerability Database SB20261023155

SB20261023155 - Memory leak in Linux kernel bluetooth rfcomm

Published: October 23, 2026

Security Bulletin ID SB20261023155
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Memory leak (CVE-ID: CVE-2026-99010)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 6 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker on the local network to exhaust kernel memory and cause a denial of service.

The vulnerability exists due to a memory leak in the Linux kernel Bluetooth RFCOMM socket callback rfcomm_sk_data_ready() when processing incoming data frames for a connected data link connection whose owner has been cleared. A remote attacker on the local network can send repeated data frames during the interval before the connection closes to accumulate unreleased socket buffers and exhaust kernel memory, causing a denial of service.


Remediation

Install update from vendor's website.

References