CVE-2015-7940 · cross-distro fix matrix

CVE-2015-7940: The Bouncy Castle Java library before 1.51 does not validate a point is withing the elliptic curve, which makes it easier for remote attackers to obtain private keys via a series of crafted elliptic curve Diffie Hellman (ECDH) key exchanges, aka an "invalid curve attack."

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2015-7940 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

bouncycastle→ fixed in1.51-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y bouncycastle
```

Debian bookworm

Source: Debian Security Tracker

bouncycastle→ fixed in1.51-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y bouncycastle
```

Debian trixie

Source: Debian Security Tracker

bouncycastle→ fixed in1.51-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y bouncycastle
```

Are YOU affected by CVE-2015-7940?

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.

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