Patch "xtensa: ISS: fix call to split_if_spec" has been added to the 6.4-stable tree

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This is a note to let you know that I've just added the patch titled

    xtensa: ISS: fix call to split_if_spec

to the 6.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     xtensa-iss-fix-call-to-split_if_spec.patch
and it can be found in the queue-6.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From bc8d5916541fa19ca5bc598eb51a5f78eb891a36 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@xxxxxxxxx>
Date: Mon, 3 Jul 2023 11:01:42 -0700
Subject: xtensa: ISS: fix call to split_if_spec

From: Max Filippov <jcmvbkbc@xxxxxxxxx>

commit bc8d5916541fa19ca5bc598eb51a5f78eb891a36 upstream.

split_if_spec expects a NULL-pointer as an end marker for the argument
list, but tuntap_probe never supplied that terminating NULL. As a result
incorrectly formatted interface specification string may cause a crash
because of the random memory access. Fix that by adding NULL terminator
to the split_if_spec argument list.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 7282bee78798 ("[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 8")
Signed-off-by: Max Filippov <jcmvbkbc@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 arch/xtensa/platforms/iss/network.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -237,7 +237,7 @@ static int tuntap_probe(struct iss_net_p
 
 	init += sizeof(TRANSPORT_TUNTAP_NAME) - 1;
 	if (*init == ',') {
-		rem = split_if_spec(init + 1, &mac_str, &dev_name);
+		rem = split_if_spec(init + 1, &mac_str, &dev_name, NULL);
 		if (rem != NULL) {
 			pr_err("%s: extra garbage on specification : '%s'\n",
 			       dev->name, rem);


Patches currently in stable-queue which might be from jcmvbkbc@xxxxxxxxx are

queue-6.4/xtensa-iss-fix-call-to-split_if_spec.patch



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