45 lines
1.3 KiB
Diff
45 lines
1.3 KiB
Diff
From: David Howells <dhowells@redhat.com>
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Date: Tue, 16 Sep 2014 17:29:03 +0100
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Subject: [PATCH] KEYS: Reinstate EPERM for a key type name beginning with a
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'.'
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Reinstate the generation of EPERM for a key type name beginning with a '.' in
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a userspace call. Types whose name begins with a '.' are internal only.
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The test was removed by:
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commit a4e3b8d79a5c6d40f4a9703abf7fe3abcc6c3b8d
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Author: Mimi Zohar <zohar@linux.vnet.ibm.com>
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Date: Thu May 22 14:02:23 2014 -0400
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Subject: KEYS: special dot prefixed keyring name bug fix
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I think we want to keep the restriction on type name so that userspace can't
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add keys of a special internal type.
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Note that removal of the test causes several of the tests in the keyutils
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testsuite to fail.
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Signed-off-by: David Howells <dhowells@redhat.com>
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Acked-by: Vivek Goyal <vgoyal@redhat.com>
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cc: Mimi Zohar <zohar@linux.vnet.ibm.com>
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---
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security/keys/keyctl.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
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index e26f860e5f2e..eff88a5f5d40 100644
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--- a/security/keys/keyctl.c
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+++ b/security/keys/keyctl.c
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@@ -37,6 +37,8 @@ static int key_get_type_from_user(char *type,
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return ret;
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if (ret == 0 || ret >= len)
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return -EINVAL;
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+ if (type[0] == '.')
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+ return -EPERM;
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type[len - 1] = '\0';
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return 0;
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}
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--
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1.9.3
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