title: DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer
description: Lack of proper validation in HCI Host stack initialization can cause a crash of the bluetooth stack
problem types: Improper Check or Handling of Exceptional Conditions (CWE-703)
affected:
{
vendor: zephyrproject-rtos
product: zephyr
versions:
version: unspecified, lessThanOrEqual: v2.4, status: affected, versionType: custom
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H
attackVector: ADJACENT_NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: LOW
integrityImpact: HIGH
availabilityImpact: HIGH
baseScore: 9.6
baseSeverity: CRITICAL
]