CVE-2021-3455 — Use After Free in Zephyr

CWE-416 — Use After Free2 documents2 sources
Severity
7.5HIGHNVD
CNA4.3
EPSS
0.4%
top 39.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Zephyrproject-rtos ZephyrZephyrproject Zephyr
Timeline
PublishedOct 19

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5zephyrproject-rtos/zephyr2.4.0 — unspecified+1
▶NVDzephyrproject/zephyr2.4.0 — 2.6.0

🔴Vulnerability Details

1
CVEList
Disconnecting L2CAP channel right after invalid ATT request leads freeze↗2021-10-19
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CVE-2021-3455 — Use After Free in Zephyr | cvebase