File U_regression2-bug1207029_1207030_1207031.patch of Package libXpm.27381

From 8178eb0834d82242e1edbc7d4fb0d1b397569c68 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Mon, 16 Jan 2023 19:44:52 +1000
Subject: [PATCH libXpm 7/7] Use gzip -d instead of gunzip

GNU gunzip [1] is a shell script that exec's `gzip -d`. Even if we call
/usr/bin/gunzip with the correct built-in path, the actual gzip call
will use whichever gzip it finds first, making our patch pointless.

Fix this by explicitly calling gzip -d instead.

https://git.savannah.gnu.org/cgit/gzip.git/tree/gunzip.in

[Part of the fix for CVE-2022-4883]
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
 README.md    | 2 +-
 configure.ac | 3 +--
 src/RdFToI.c | 2 +-
 3 files changed, 3 insertions(+), 4 deletions(-)

Index: libXpm-3.5.12/README.md
===================================================================
--- libXpm-3.5.12.orig/README.md
+++ libXpm-3.5.12/README.md
@@ -41,5 +41,5 @@ the first version found in the PATH used
 on the PATH environment variable set at runtime.
 
 To specify paths to be used for these commands instead of searching $PATH, pass
-the XPM_PATH_COMPRESS, XPM_PATH_UNCOMPRESS, XPM_PATH_GZIP, and XPM_PATH_GUNZIP
+the XPM_PATH_COMPRESS, XPM_PATH_UNCOMPRESS, and XPM_PATH_GZIP
 variables to the configure command.
Index: libXpm-3.5.12/configure.ac
===================================================================
--- libXpm-3.5.12.orig/configure.ac
+++ libXpm-3.5.12/configure.ac
@@ -57,7 +57,7 @@ AC_DEFINE_UNQUOTED([$1], ["$$1"], [Path
 ]) dnl End of AC_DEFUN([XPM_PATH_PROG]...
 
 # Optional feature: When a filename ending in .Z or .gz is requested,
-# open a pipe to a newly forked compress/uncompress/gzip/gunzip command to
+# open a pipe to a newly forked compress/uncompress/gzip command to
 # handle it.
 AC_MSG_CHECKING([whether to handle compressed pixmaps])
 case $host_os in
@@ -74,7 +74,6 @@ if test x$OPEN_ZFILE = xno ; then
 else
         XPM_PATH_PROG([XPM_PATH_UNCOMPRESS], [uncompress])
         XPM_PATH_PROG([XPM_PATH_GZIP], [gzip])
-        XPM_PATH_PROG([XPM_PATH_GUNZIP], [gunzip])
         AC_CHECK_FUNCS([closefrom close_range], [break])
 fi
 
Index: libXpm-3.5.12/src/RdFToI.c
===================================================================
--- libXpm-3.5.12.orig/src/RdFToI.c
+++ libXpm-3.5.12/src/RdFToI.c
@@ -251,7 +251,7 @@ OpenReadFile(
 	else if ( ext && !strcmp(ext, ".gz") )
 	{
 	    mdata->type = XPMPIPE;
-	    mdata->stream.file = xpmPipeThrough(fd, XPM_PATH_GUNZIP, "-qc", "r");
+	    mdata->stream.file = xpmPipeThrough(fd, XPM_PATH_GZIP, "-dqc", "r");
 	}
 	else
 #endif /* z-files */