In TFA: https://copy.fail/#mitigation

> Before you can patch: disable the algif_aead module.

> echo "install algif_aead /bin/false" > /etc/modprobe.d/disable-algif.conf

> rmmod algif_aead 2>/dev/null || true

Edit: and I can confirm that on my system with kernel 6.19.8 the above fixes the exploit.

Weirdly, the mitigation does not seem to work under WSL2 (at least in Ubuntu 24.04).

    Linux wsl2 6.6.87.2-microsoft-standard-WSL2 ...

Outside of WSL2, the mitigation does appear to work though.