CVE-2019-18222 · cross-distro fix matrix

CVE-2019-18222: The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.

Affects 8 Linux releases across 11 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2019-18222 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

mbedtls→ fixed in2.16.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y mbedtls
```

Debian bookworm

Source: Debian Security Tracker

mbedtls→ fixed in2.16.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y mbedtls
```

Debian trixie

Source: Debian Security Tracker

mbedtls→ fixed in2.16.4-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y mbedtls
```

Alpine v3.20

Source: Alpine secdb

mbedtls→ fixed in2.16.4-r0
```
apk update && apk add --upgrade mbedtls
```

mbedtls2→ fixed in2.16.4-r0

apk update && apk add --upgrade mbedtls2

Alpine v3.21

Source: Alpine secdb

mbedtls→ fixed in2.16.4-r0
```
apk update && apk add --upgrade mbedtls
```

mbedtls2→ fixed in2.16.4-r0

apk update && apk add --upgrade mbedtls2

Alpine edge

Source: Alpine secdb

mbedtls→ fixed in2.16.4-r0
```
apk update && apk add --upgrade mbedtls
```

mbedtls2→ fixed in2.16.4-r0

apk update && apk add --upgrade mbedtls2

Alpine v3.18

Source: Alpine secdb

mbedtls→ fixed in2.16.4-r0
```
apk update && apk add --upgrade mbedtls
```

Alpine v3.19

Source: Alpine secdb

mbedtls→ fixed in2.16.4-r0
```
apk update && apk add --upgrade mbedtls
```

Are YOU affected by CVE-2019-18222?

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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