bzip2recover: Fix buffer overflow for large argv[0].
bzip2recover.c (main) copies argv[0] to a statically sized buffer
without checking whether argv[0] might be too big (> 2000 chars).
This patch comes from Fedora and was originally reported at
https://bugzilla.redhat.com/show_bug.cgi?id=226979
diff --git a/bzip2recover.c b/bzip2recover.c
index 06ac1f5..1a70e04 100644
--- a/bzip2recover.c
+++ b/bzip2recover.c
@@ -309,7 +309,8 @@
UInt32 buffHi, buffLo, blockCRC;
Char* p;
- strcpy ( progName, argv[0] );
+ strncpy ( progName, argv[0], BZ_MAX_FILENAME-1);
+ progName[BZ_MAX_FILENAME-1]='\0';
inFileName[0] = outFileName[0] = 0;
fprintf ( stderr,
