fix possible crash

git-svn: trunk@1633
21 years ago · 6698f32757
parent 289615f706
commit 6698f32757
2 changed files with 7 additions and 1 deletions
--- a/clamav-devel/ChangeLog
+++ b/clamav-devel/ChangeLog
@ -1,3 +1,7 @@
+Thu Jun 23 22:52:43 CEST 2005 (tk)
+----------------------------------
+  * libclamav/mspack/qtmd.c: fix possible crash
+
 Thu Jun 23 15:49:10 CEST 2005 (tk)
 ----------------------------------
  * clamd: revert the queue limit patch
--- a/clamav-devel/libclamav/mspack/qtmd.c
+++ b/clamav-devel/libclamav/mspack/qtmd.c
@ -250,7 +250,9 @@ struct qtmd_stream *qtmd_init(struct mspack_system *system,
  if (!system) return NULL;

  /* Quantum supports window sizes of 2^10 (1Kb) through 2^21 (2Mb) */
-  if (window_bits < 10 || window_bits > 21) return NULL;
+
+  /* tk: temporary fix: only process 32KB+ window sizes */
+  if (window_bits < 15 || window_bits > 21) return NULL;

  input_buffer_size = (input_buffer_size + 1) & -2;
  if (input_buffer_size < 2) return NULL;