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Fix UB in the SO_TYPE sockopt #1821

Merged
merged 1 commit into from Nov 29, 2022
Merged

Fix UB in the SO_TYPE sockopt #1821

merged 1 commit into from Nov 29, 2022

Commits on Nov 29, 2022

  1. Fix UB in the SO_TYPE sockopt 

    When reading a value into an enum from getsockopt, we must validate it.
Failing to do so can lead to UB for example with SOCK_PACKET on Linux.

Perform the validation in GetSockOpt::get.  Currently SockType is the
only type that requires validation.

Fixes nix-rust#1819
    @asomers
    asomers committed Nov 29, 2022
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