Comment by marshray

21 hours ago

The lesson here being... compile your own kernel from git sources every few days?

Give up entirely on non-virtualized container security?

This is not sarcasm. I'd finally given in and started learning about docker/podman-style OCI containerization last week.

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marshray

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john_strinlai  21 hours ago

in this specific case, they offer an alternative mitigation if your chosen distro has not updated yet:

For immediate mitigation, block AF_ALG socket creation via seccomp or blacklist the algif_aead module:

    echo "install algif_aead /bin/false" > /etc/modprobe.d/disable-algif-aead.conf
    rmmod algif_aead 2>/dev/null

  • marshray  20 hours ago

    Thanks!

    I'd do 'umask 133' in front of the echo out of paranoia.

    Out of curiosity, was the asterisk after '2>/dev/null' intentional? I had not seen that idiom before.

x4132  17 hours ago

are you sure containerization would be more secure? this is also a rootless podman escape. the lesson here is to not give random people shell access to your systems.