Vulnerability Details CVE-2021-3455
Disconnecting L2CAP channel right after invalid ATT request leads freeze. Zephyr versions >= 2.4.0, >= 2.5.0 contain Use After Free (CWE-416). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7g38-3x9v-v7vp
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 59.5%
CVSS Severity
CVSS v3 Score 4.3
CVSS v2 Score 5.0
References
Products affected by CVE-2021-3455
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cpe:2.3:o:zephyrproject:zephyr:2.4.0
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cpe:2.3:o:zephyrproject:zephyr:2.5.0
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cpe:2.3:o:zephyrproject:zephyr:2.5.1