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Groups > linux.kernel > #1735055

Re: [PATCH] KEYS: prevent creating a different user's keyrings

From David Howells <dhowells@redhat.com>
Newsgroups linux.kernel
Subject Re: [PATCH] KEYS: prevent creating a different user's keyrings
Date 2017-09-19 18:10 +0200
Message-ID <urtfY-7CA-27@gated-at.bofh.it> (permalink)
References <ur97A-1vB-19@gated-at.bofh.it>
Organization Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903

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Eric Biggers <ebiggers3@gmail.com> wrote:

> Fix it by marking user and user session keyrings with a flag
> KEY_FLAG_UID_KEYRING.  Then, when searching for a user or user session
> keyring by name, skip all keyrings that don't have the flag set.

I wonder if it's better just to reject attempts to manually create/join
keyrings of such names.  PAM uses the implicit creation method of specifying
the 'macro' key IDs for these keyrings.

David

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Thread

[PATCH] KEYS: prevent creating a different user's keyrings Eric Biggers <ebiggers3@gmail.com> - 2017-09-18 20:40 +0200
  Re: [PATCH] KEYS: prevent creating a different user's keyrings David Howells <dhowells@redhat.com> - 2017-09-19 18:10 +0200
    Re: [PATCH] KEYS: prevent creating a different user's keyrings Eric Biggers <ebiggers3@gmail.com> - 2017-09-22 00:10 +0200
      Re: [PATCH] KEYS: prevent creating a different user's keyrings David Howells <dhowells@redhat.com> - 2017-09-25 14:00 +0200

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