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.
CVSS Score
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Arm | Mbed Tls | < 2.16.12 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://bugs.gentoo.org/829660Issue TrackingMailing ListThird Party Advisory
- https://github.com/ARMmbed/mbedtls/releasesRelease Notes
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.12Release Notes
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0Release Notes
- https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0Release Notes
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing ListThird Party Advisory
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-ExploitMitigationThird Party Advisory
- https://bugs.gentoo.org/829660Issue TrackingMailing ListThird Party Advisory
- https://github.com/ARMmbed/mbedtls/releasesRelease Notes
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.12Release Notes
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0Release Notes
- https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0Release Notes
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/06/msg00034.html
- https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-ExploitMitigationThird Party Advisory
FAQ
What is CVE-2021-44732?
CVE-2021-44732 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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.
How severe is CVE-2021-44732?
CVE-2021-44732 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-44732?
Check the references section above for vendor advisories and patch information. Affected products include: Arm Mbed Tls, Debian Debian Linux.