Description
In Trusted Firmware Mbed TLS 2.24.0, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mbedtls | 2.16.11-0.1 | — |
| Debian 13 | mbedtls | 2.16.11-0.1 | — |
| Debian 12 | mbedtls | 2.16.11-0.1 | — |
| Debian 11 | mbedtls | 2.16.9-0.1+deb11u1 | DLA-4236-1 |
| Debian 10 | mbedtls | 2.16.9-0~deb10u1 | DLA-3249-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 9 | mbedtls | 2.4.2-1+deb9u4 | DLA-2826-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mbedtls | No fix yet | — |
| Ubuntu 26.04 LTS | mbedtls | No fix yet | — |
| Ubuntu 25.10 | mbedtls | No fix yet | — |
| Ubuntu 16.04 LTS | mbedtls | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | mbedtls | No fix yet | — |
| Ubuntu Pro 20.04 LTS | mbedtls | No fix yet | — |
| Ubuntu Pro 18.04 LTS | mbedtls | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP3 | mbedtls | 2.16.9-bp153.2.5.1 | openSUSE-SU-2021:1389-1 |
| SUSE Package Hub 15 SP2 | mbedtls | 2.16.9-bp152.2.6.1 | openSUSE-SU-2021:1355-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | mbedtls-2 | 2.27.0-2.1 | openSUSE-SU-2024:11552-1 |
| openSUSE Tumbleweed | mbedtls-3 | 3.6.6-1.1 | openSUSE-SU-2026:11119-1 |
| openSUSE Leap 15.3 | mbedtls | 2.16.9-bp153.2.5.1 | openSUSE-SU-2021:1389-1 |
| openSUSE Leap 15.2 | mbedtls | 2.16.9-lp152.2.6.1 | openSUSE-SU-2021:1344-1 |
Advisories 8
- openSUSE-SU-2026:11119-1 libeverest-3.6.6-1.1 on GA media SUSE / openSUSE Security Updates · Jun 26, 2026
- DLA-4236-1 mbedtls - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-3249-1 mbedtls - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2826-1 mbedtls - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2021:1355-1 Security update for mbedtls SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11552-1 libmbedcrypto7-2.27.0-2.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1344-1 Security update for mbedtls SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1389-1 Security update for mbedtls SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/ARMmbed/mbedtls/releases
- https://github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md
- FEDORA-2021-10bfc067d1 vendor-advisory
- FEDORA-2021-165969af24 vendor-advisory
- [debian-lts-announce] 20211123 [SECURITY] [DLA 2826-1] mbedtls security update mailing-list
- [debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update mailing-list