title: L2CAP: Possible Stack based buffer overflow in le_ecred_reconf_req()
description: Possible variant of CVE-2021-3434 in function le_ecred_reconf_req.
problem types:  CWE-121 Stack-based Buffer Overflow A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
affected:
{
defaultStatus: unaffected
product: Zephyr
repo: https://github.com/zephyrproject-rtos/zephyr
vendor: zephyrproject-rtos
versions:
lessThanOrEqual: 3.4, status: affected, version: *, versionType: git
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: HIGH
baseScore: 8.3
baseSeverity: HIGH
confidentialityImpact: LOW
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL