CVE-2025-49600 · cross-distro fix matrix

CVE-2025-49600: In MbedTLS 3.3.0 before 3.6.4, mbedtls_lms_verify may accept invalid signatures if hash computation fails and internal errors go unchecked, enabling LMS (Leighton-Micali Signature) forgery in a fault scenario. Specifically, unchecked return values in mbedtls_lms_verify allow an attacker (who can ind

Affects 4 Linux releases across 4 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2025-49600 has a known fix. Run the listed command on that distro to remediate.

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-2025-49600?

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

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