CVE-2021-44732
9.8 CRITICALMbed TLS before 3.0.1 has a double free in certain out-of-memory conditions, as demonstrated by an mbedtls_ssl_set_session() failure
Published: 2021-12-20 · Last updated: 2026-06-05
Severity and scoring
- CVSS
- 9.8 CRITICAL
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-415
Affected products
| Vendor | Product |
|---|---|
| arm | debian_linux, mbed_tls |
| debian | debian_linux, mbed_tls |
| trustedfirmware | debian_linux, mbed_tls |
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-44732
- [Other]https://bugs.gentoo.org/829660
- [Other]https://github.com/ARMmbed/mbedtls/releases
- [Other]https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.12
- [Other]https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0
- [Other]https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0
- [Other]https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
- [Exploit reference]https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-12
- [Other]https://bugs.gentoo.org/829660
- [Other]https://github.com/ARMmbed/mbedtls/releases
- [Other]https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.12
- [Other]https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0
- [Other]https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0
- [Other]https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
- [Other]https://lists.debian.org/debian-lts-announce/2025/06/msg00034.html
- [Exploit reference]https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-12
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