Description
Integer Overflow vulnerability in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2, allows attackers to cause a denial of service (DoS) via mbedtls_x509_set_extension().
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 | 2.28.7-1 | — |
| Debian 13 | mbedtls | 2.28.7-1 | — |
| Debian 12 | mbedtls | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | mbedtls | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | mbedtls | 2.28.8-1ubuntu0.1~esm1 | USN-8123-1 |
| Ubuntu Pro 22.04 LTS | mbedtls | 2.28.0-1ubuntu0.1~esm1 | USN-8123-1 |
| Ubuntu Pro 20.04 LTS | mbedtls | 2.16.4-1ubuntu2+esm1 | USN-8123-1 |
| Ubuntu Pro 18.04 LTS | mbedtls | 2.8.0-1ubuntu0.1~esm1 | USN-8123-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | mbedtls +2 | 2.28.7-r0 | — |
| Alpine v3.23 | mbedtls +1 | 2.28.7-r0 | — |
| Alpine v3.22 | mbedtls +1 | 2.28.7-r0 | — |
| Alpine v3.21 | mbedtls +1 | 2.28.7-r0 | — |
| Alpine v3.20 | mbedtls +1 | 2.28.7-r0 | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | mbedtls | 2.28.7-r0 | — |
| Alpine v3.18 | mbedtls | 2.28.7-r0 | — |
| Alpine v3.17 | mbedtls | 2.28.7-r0 | — |
| Alpine v3.16 | mbedtls | 2.28.7-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | hvloader | 1.0.1-6 | — |
Advisories 1
- USN-8123-1 mbedtls vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026