[Guile-commits] GNU Guile branch, master, updated. release_1-9-13-40-gf25e1b6

[Julian Graham]

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- Log -----------------------------------------------------------------
commit f25e1b6713f06ddbe6d084e6ffb2e80e099d77f6
Author: Julian Graham <address@hidden>
Date:   Fri Nov 12 08:45:09 2010 -0500

    Fix buffer over-read in port encoding scan.
    
    * libguile/read.c (scm_i_scan_for_encoding): Add a NULL terminator to the
      end of header to prevent over-read by subsequent call to strstr.

-----------------------------------------------------------------------

Summary of changes:
 libguile/read.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/libguile/read.c b/libguile/read.c
index 609285c..07a4ffd 100644
--- a/libguile/read.c
+++ b/libguile/read.c
@@ -1646,6 +1646,7 @@ scm_i_scan_for_encoding (SCM port)
     return NULL;
 
   bytes_read = scm_c_read (port, header, SCM_ENCODING_SEARCH_SIZE);
+  header[bytes_read] = NULL;
 
   scm_seek (port, scm_from_int (0), scm_from_int (SEEK_SET));
 


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