Re: [PATCH v2 1/2] exec: add a flag for "reasonable" execveat() comm

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"Eric W. Biederman" <ebiederm@xxxxxxxxxxxx> writes:

> Kees Cook <kees@xxxxxxxxxx> writes:

>> I'm not super comfortable doing this regardless of bprm->fdpath; that
>> seems like too many cases getting changed. Can we just leave it as
>> depending on bprm->fdpath?

I was recommending that because I did not expect that there was any
widespread usage of aliasing of binary names using symlinks.

I realized today that on debian there are many aliases
of binaries created with the /etc/alternatives mechanism.
So there is much wider exposure to problems than I would have
supposed.

So I remove any objections to making the new code conditional on bprm->fdpath.

Eric





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