CVE-2021-36087 · cross-distro fix matrix

CVE-2021-36087: The CIL compiler in SELinux 3.2 has a heap-based buffer over-read in ebitmap_match_any (called indirectly from cil_check_neverallow). This occurs because there is sometimes a lack of checks for invalid statements in an optional block.

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-36087 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libsepol→ fixed in3.1-1+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libsepol
```

Debian bookworm

Source: Debian Security Tracker

libsepol→ fixed in3.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libsepol
```

Debian trixie

Source: Debian Security Tracker

libsepol→ fixed in3.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libsepol
```

Are YOU affected by CVE-2021-36087?

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

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