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Status published
Critical
CVE-2021-44732
Mbed TLS before 3.0.1 has a double free in certain...
Vulnerability Description
Mbed TLS before 3.0.1 has a double free in certain out-of-memory conditions, as demonstrated by an mbedtls_ssl_set_session() failure.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/ARMmbed/mbedtls/releases
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-12
- https://bugs.gentoo.org/829660
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.12
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0
- https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
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Affected Vendor
Affected Software
mbed tls, debian linux
Vulnerable Versions:
0, 2.17.0, 3.0.0, 10.0
Timeline
Official Publish:
December 20th, 2021
Last Modified:
November 3rd, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.