CVE-2021-44732

EUVD-2021-31547
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 75%
Affected Products (NVD)
VendorProductVersion
armmbed_tls
𝑥
< 2.16.12
armmbed_tls
2.17.0 ≤
𝑥
< 2.28.0
armmbed_tls
3.0.0
armmbed_tls
3.0.0:preview1
debiandebian_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
mbedtls
bookworm
2.28.3-1
fixed
bullseye
no-dsa
sid
3.6.2-1
fixed
trixie
2.28.8-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
mbedtls
bionic
needs-triage
focal
needs-triage
hirsute
ignored
impish
ignored
jammy
needs-triage
kinetic
ignored
lunar
ignored
mantic
ignored
noble
needs-triage
trusty
ignored
xenial
needs-triage
Common Weakness Enumeration
References
https://bugs.gentoo.org/829660
https://github.com/ARMmbed/mbedtls/releases
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
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-12
https://bugs.gentoo.org/829660
https://github.com/ARMmbed/mbedtls/releases
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
https://lists.debian.org/debian-lts-announce/2025/06/msg00034.html
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2021-12