8f4ffb3fae
This fixes a security issue (CVE-2024-27297) whereby a fixed-output
derivation build process could open a writable file descriptor to its
output, send it to some outside process for instance over an abstract
AF_UNIX socket, which would then allow said process to modify the file
in the store after it has been marked as “valid”.
Vulnerability discovered by puck <https://github.com/puckipedia>.
Nix security advisory:
https://github.com/NixOS/nix/security/advisories/GHSA-2ffj-w4mj-pg37
Nix fix:
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|---|---|---|
| .. | ||
| .gitignore | ||
| build.cc | ||
| builtins.cc | ||
| builtins.hh | ||
| derivations.cc | ||
| derivations.hh | ||
| gc.cc | ||
| globals.cc | ||
| globals.hh | ||
| local-store.cc | ||
| local-store.hh | ||
| misc.cc | ||
| misc.hh | ||
| optimise-store.cc | ||
| pathlocks.cc | ||
| pathlocks.hh | ||
| references.cc | ||
| references.hh | ||
| sqlite.cc | ||
| sqlite.hh | ||
| store-api.cc | ||
| store-api.hh | ||
| worker-protocol.hh | ||