509: fix printing uninitialized stack memory when OID is empty

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Callers of sprint_oid() do not check its return value before printing
the result.  In the case where the OID is zero-length, -EBADMSG was
being returned without anything being written to the buffer, resulting
in uninitialized stack memory being printed.  Fix this by writing
"(bad)" to the buffer in the cases where -EBADMSG is returned.

Fixes: 4f73175d03 ("X.509: Add utility functions to render OIDs as strings")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>

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Eric Biggers 2017-12-08 15:13:28 +00:00 • committed by David Howells

parent 47e0a208fb

commit 8dfd2f22d3

1 changed files with 6 additions and 2 deletions

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lib/oid_registry.c

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