CVE-2025-47917 · cross-distro fix matrix

CVE-2025-47917: Mbed TLS before 3.6.4 allows a use-after-free in certain situations of applications that are developed in accordance with the documentation. The function mbedtls_x509_string_to_names() takes a head argument that is documented as an output argument. The documentation does not suggest that the functio

Affects 5 Linux releases across 5 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-47917 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

mbedtls→ fixed in2.16.9-0.1+deb11u3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y mbedtls
```

Debian trixie

Source: Debian Security Tracker

mbedtls→ fixed in3.6.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y mbedtls
```

Alpine v3.20

Source: Alpine secdb

mbedtls→ fixed in3.6.4-r0
```
apk update && apk add --upgrade mbedtls
```

Alpine v3.21

Source: Alpine secdb

mbedtls→ fixed in3.6.4-r0
```
apk update && apk add --upgrade mbedtls
```

Alpine edge

Source: Alpine secdb

mbedtls→ fixed in3.6.4-r0
```
apk update && apk add --upgrade mbedtls
```

Are YOU affected by CVE-2025-47917?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

CVE-2025-47917dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

See StackPatch ($99 lifetime)