patch 9.1.0404: [security] xxd: buffer-overflow with specific flagsv9.1.0404

Problem:  [security] xxd: buffer-overflow with specific flags
Solution: Correctly calculate the required buffer space
          (Lennard Hofmann)

xxd writes each output line into a global buffer before printing.
The maximum size of that buffer was not calculated correctly.

This command was crashing in AddressSanitizer:
$ xxd -Ralways -g1 -c256 -d -o 9223372036854775808 /etc/passwd

This prints a line of 6680 bytes but the buffer only had room for 6549 bytes.
If the output from "-b" was colored, the line could be even longer.

closes: #14738

Co-authored-by: K.Takata <kentkt@csc.jp>
Signed-off-by: Lennard Hofmann <lennard.hofmann@web.de>
Signed-off-by: Christian Brabandt <cb@256bit.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/version.c b/src/version.c
index 954b747b58..6bb8be6f4e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    404,
+/**/
     403,
 /**/
     402,