[Bug 2207] Potential NULL deference, found using coverity

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=2207

Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |djm at mindrot.org
           Severity|security                    |trivial

--- Comment #1 from Damien Miller <djm at mindrot.org> ---
We don't normally mark crashers as security bugs unless they take down
the master sshd process.

That being said, there is no NULL dereference here anyway. See the
"kdfname == NULL"

You are right about the logic error in testing the KDF name, but the
impact of this is failure to read keys that have a KDF that is other
than 'bcrypt' or 'none', which we would not be able to do anyway.

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