CVE-2021-31826 · cross-distro fix matrix

CVE-2021-31826: Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw involving the session recovery feature. The flaw is exploitable (for a daemon crash) on systems not using this feature if a crafted cookie is supplied.

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-31826 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

shibboleth-sp→ fixed in3.2.2+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y shibboleth-sp
```

Debian bookworm

Source: Debian Security Tracker

shibboleth-sp→ fixed in3.2.2+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y shibboleth-sp
```

Debian trixie

Source: Debian Security Tracker

shibboleth-sp→ fixed in3.2.2+dfsg1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y shibboleth-sp
```

Are YOU affected by CVE-2021-31826?

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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